gsutil: use depot_tools.gsutil_py_path instead of path['depot_tools']

scripts/slave/recipes/skia/ct_skps.expected/CT_BENCH_10k_SKPs.json

 [
   {
     "cmd": [
       "git",
       "remote",
       "set-url",
       "origin",
       "https://skia.googlesource.com/skia.git"
     ],
     "cwd": "[SLAVE_BUILD]/skia",
@@ skipping 327 matching lines @@
       "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
       "@@@STEP_LOG_END@python.inline@@@"
     ]
   },
   {
     "cmd": [
       "python",
       "-u",
       "RECIPE_MODULE[build::gsutil]/resources/gsutil_wrapper.py",
       "--",
-      "[DEPOT_TOOLS]/gsutil.py",
+      "RECIPE_PACKAGE_REPO[depot_tools]/gsutil.py",
       "----",
       "-m",
       "rsync",
       "-d",
       "-r",
       "gs://cluster-telemetry/skps/10k/57259e0-05dcb4c/slave1",
       "[SLAVE_BUILD]/skps/slave1"
     ],
     "name": "gsutil rsync"
   },
@@ skipping 50 matching lines @@
       "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
       "@@@STEP_LOG_END@python.inline@@@"
     ]
   },
   {
     "cmd": [
       "python",
       "-u",
       "RECIPE_MODULE[build::gsutil]/resources/gsutil_wrapper.py",
       "--",
-      "[DEPOT_TOOLS]/gsutil.py",
+      "RECIPE_PACKAGE_REPO[depot_tools]/gsutil.py",
       "----",
       "-m",
       "rsync",
       "-d",
       "-r",
       "gs://cluster-telemetry/skps/10k/57259e0-05dcb4c/slave2",
       "[SLAVE_BUILD]/skps/slave2"
     ],
     "name": "gsutil rsync (2)"
   },
@@ skipping 50 matching lines @@
       "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
       "@@@STEP_LOG_END@python.inline@@@"
     ]
   },
   {
     "cmd": [
       "python",
       "-u",
       "RECIPE_MODULE[build::gsutil]/resources/gsutil_wrapper.py",
       "--",
-      "[DEPOT_TOOLS]/gsutil.py",
+      "RECIPE_PACKAGE_REPO[depot_tools]/gsutil.py",
       "----",
       "-m",
       "rsync",
       "-d",
       "-r",
       "gs://cluster-telemetry/skps/10k/57259e0-05dcb4c/slave3",
       "[SLAVE_BUILD]/skps/slave3"
     ],
     "name": "gsutil rsync (3)"
   },
@@ skipping 50 matching lines @@
       "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
       "@@@STEP_LOG_END@python.inline@@@"
     ]
   },
   {
     "cmd": [
       "python",
       "-u",
       "RECIPE_MODULE[build::gsutil]/resources/gsutil_wrapper.py",
       "--",
-      "[DEPOT_TOOLS]/gsutil.py",
+      "RECIPE_PACKAGE_REPO[depot_tools]/gsutil.py",
       "----",
       "-m",
       "rsync",
       "-d",
       "-r",
       "gs://cluster-telemetry/skps/10k/57259e0-05dcb4c/slave4",
       "[SLAVE_BUILD]/skps/slave4"
     ],
     "name": "gsutil rsync (4)"
   },
@@ skipping 50 matching lines @@
       "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
       "@@@STEP_LOG_END@python.inline@@@"
     ]
   },
   {
     "cmd": [
       "python",
       "-u",
       "RECIPE_MODULE[build::gsutil]/resources/gsutil_wrapper.py",
       "--",
-      "[DEPOT_TOOLS]/gsutil.py",
+      "RECIPE_PACKAGE_REPO[depot_tools]/gsutil.py",
       "----",
       "-m",
       "rsync",
       "-d",
       "-r",
       "gs://cluster-telemetry/skps/10k/57259e0-05dcb4c/slave5",
       "[SLAVE_BUILD]/skps/slave5"
     ],
     "name": "gsutil rsync (5)"
   },
@@ skipping 464 matching lines @@
       "@@@STEP_LOG_LINE@python.inline@    json.dump(os.listdir(sys.argv[1]), f)@@@",
       "@@@STEP_LOG_END@python.inline@@@"
     ]
   },
   {
     "cmd": [
       "python",
       "-u",
       "RECIPE_MODULE[build::gsutil]/resources/gsutil_wrapper.py",
       "--",
-      "[DEPOT_TOOLS]/gsutil.py",
+      "RECIPE_PACKAGE_REPO[depot_tools]/gsutil.py",
       "----",
       "cp",
       "-R",
       "[SLAVE_BUILD]/swarming_temp_dir/outputs/ct-nanobench-1/0/file 1",
       "gs://skia-perf/ct/10k/2012/05/14/12/"
     ],
     "env": {
       "AWS_CREDENTIAL_FILE": null,
       "BOTO_CONFIG": null
     },
     "name": "gsutil upload json output",
     "~followup_annotations": [
       "@@@STEP_LINK@gsutil.upload@https://storage.cloud.google.com/skia-perf/ct/10k/2012/05/14/12/@@@"
     ]
   },
   {
     "cmd": [
       "python",
       "-u",
       "RECIPE_MODULE[build::gsutil]/resources/gsutil_wrapper.py",
       "--",
-      "[DEPOT_TOOLS]/gsutil.py",
+      "RECIPE_PACKAGE_REPO[depot_tools]/gsutil.py",
       "----",
       "cp",
       "-R",
       "[SLAVE_BUILD]/swarming_temp_dir/outputs/ct-nanobench-1/0/file 2",
       "gs://skia-perf/ct/10k/2012/05/14/12/"
     ],
     "env": {
       "AWS_CREDENTIAL_FILE": null,
       "BOTO_CONFIG": null
     },
@@ skipping 86 matching lines @@
       "@@@STEP_LOG_LINE@python.inline@    json.dump(os.listdir(sys.argv[1]), f)@@@",
       "@@@STEP_LOG_END@python.inline@@@"
     ]
   },
   {
     "cmd": [
       "python",
       "-u",
       "RECIPE_MODULE[build::gsutil]/resources/gsutil_wrapper.py",
       "--",
-      "[DEPOT_TOOLS]/gsutil.py",
+      "RECIPE_PACKAGE_REPO[depot_tools]/gsutil.py",
       "----",
       "cp",
       "-R",
       "[SLAVE_BUILD]/swarming_temp_dir/outputs/ct-nanobench-2/0/file 1",
       "gs://skia-perf/ct/10k/2012/05/14/12/"
     ],
     "env": {
       "AWS_CREDENTIAL_FILE": null,
       "BOTO_CONFIG": null
     },
     "name": "gsutil upload json output (3)",
     "~followup_annotations": [
       "@@@STEP_LINK@gsutil.upload@https://storage.cloud.google.com/skia-perf/ct/10k/2012/05/14/12/@@@"
     ]
   },
   {
     "cmd": [
       "python",
       "-u",
       "RECIPE_MODULE[build::gsutil]/resources/gsutil_wrapper.py",
       "--",
-      "[DEPOT_TOOLS]/gsutil.py",
+      "RECIPE_PACKAGE_REPO[depot_tools]/gsutil.py",
       "----",
       "cp",
       "-R",
       "[SLAVE_BUILD]/swarming_temp_dir/outputs/ct-nanobench-2/0/file 2",
       "gs://skia-perf/ct/10k/2012/05/14/12/"
     ],
     "env": {
       "AWS_CREDENTIAL_FILE": null,
       "BOTO_CONFIG": null
     },
@@ skipping 86 matching lines @@
       "@@@STEP_LOG_LINE@python.inline@    json.dump(os.listdir(sys.argv[1]), f)@@@",
       "@@@STEP_LOG_END@python.inline@@@"
     ]
   },
   {
     "cmd": [
       "python",
       "-u",
       "RECIPE_MODULE[build::gsutil]/resources/gsutil_wrapper.py",
       "--",
-      "[DEPOT_TOOLS]/gsutil.py",
+      "RECIPE_PACKAGE_REPO[depot_tools]/gsutil.py",
       "----",
       "cp",
       "-R",
       "[SLAVE_BUILD]/swarming_temp_dir/outputs/ct-nanobench-3/0/file 1",
       "gs://skia-perf/ct/10k/2012/05/14/12/"
     ],
     "env": {
       "AWS_CREDENTIAL_FILE": null,
       "BOTO_CONFIG": null
     },
     "name": "gsutil upload json output (5)",
     "~followup_annotations": [
       "@@@STEP_LINK@gsutil.upload@https://storage.cloud.google.com/skia-perf/ct/10k/2012/05/14/12/@@@"
     ]
   },
   {
     "cmd": [
       "python",
       "-u",
       "RECIPE_MODULE[build::gsutil]/resources/gsutil_wrapper.py",
       "--",
-      "[DEPOT_TOOLS]/gsutil.py",
+      "RECIPE_PACKAGE_REPO[depot_tools]/gsutil.py",
       "----",
       "cp",
       "-R",
       "[SLAVE_BUILD]/swarming_temp_dir/outputs/ct-nanobench-3/0/file 2",
       "gs://skia-perf/ct/10k/2012/05/14/12/"
     ],
     "env": {
       "AWS_CREDENTIAL_FILE": null,
       "BOTO_CONFIG": null
     },
@@ skipping 86 matching lines @@
       "@@@STEP_LOG_LINE@python.inline@    json.dump(os.listdir(sys.argv[1]), f)@@@",
       "@@@STEP_LOG_END@python.inline@@@"
     ]
   },
   {
     "cmd": [
       "python",
       "-u",
       "RECIPE_MODULE[build::gsutil]/resources/gsutil_wrapper.py",
       "--",
-      "[DEPOT_TOOLS]/gsutil.py",
+      "RECIPE_PACKAGE_REPO[depot_tools]/gsutil.py",
       "----",
       "cp",
       "-R",
       "[SLAVE_BUILD]/swarming_temp_dir/outputs/ct-nanobench-4/0/file 1",
       "gs://skia-perf/ct/10k/2012/05/14/12/"
     ],
     "env": {
       "AWS_CREDENTIAL_FILE": null,
       "BOTO_CONFIG": null
     },
     "name": "gsutil upload json output (7)",
     "~followup_annotations": [
       "@@@STEP_LINK@gsutil.upload@https://storage.cloud.google.com/skia-perf/ct/10k/2012/05/14/12/@@@"
     ]
   },
   {
     "cmd": [
       "python",
       "-u",
       "RECIPE_MODULE[build::gsutil]/resources/gsutil_wrapper.py",
       "--",
-      "[DEPOT_TOOLS]/gsutil.py",
+      "RECIPE_PACKAGE_REPO[depot_tools]/gsutil.py",
       "----",
       "cp",
       "-R",
       "[SLAVE_BUILD]/swarming_temp_dir/outputs/ct-nanobench-4/0/file 2",
       "gs://skia-perf/ct/10k/2012/05/14/12/"
     ],
     "env": {
       "AWS_CREDENTIAL_FILE": null,
       "BOTO_CONFIG": null
     },
@@ skipping 86 matching lines @@
       "@@@STEP_LOG_LINE@python.inline@    json.dump(os.listdir(sys.argv[1]), f)@@@",
       "@@@STEP_LOG_END@python.inline@@@"
     ]
   },
   {
     "cmd": [
       "python",
       "-u",
       "RECIPE_MODULE[build::gsutil]/resources/gsutil_wrapper.py",
       "--",
-      "[DEPOT_TOOLS]/gsutil.py",
+      "RECIPE_PACKAGE_REPO[depot_tools]/gsutil.py",
       "----",
       "cp",
       "-R",
       "[SLAVE_BUILD]/swarming_temp_dir/outputs/ct-nanobench-5/0/file 1",
       "gs://skia-perf/ct/10k/2012/05/14/12/"
     ],
     "env": {
       "AWS_CREDENTIAL_FILE": null,
       "BOTO_CONFIG": null
     },
     "name": "gsutil upload json output (9)",
     "~followup_annotations": [
       "@@@STEP_LINK@gsutil.upload@https://storage.cloud.google.com/skia-perf/ct/10k/2012/05/14/12/@@@"
     ]
   },
   {
     "cmd": [
       "python",
       "-u",
       "RECIPE_MODULE[build::gsutil]/resources/gsutil_wrapper.py",
       "--",
-      "[DEPOT_TOOLS]/gsutil.py",
+      "RECIPE_PACKAGE_REPO[depot_tools]/gsutil.py",
       "----",
       "cp",
       "-R",
       "[SLAVE_BUILD]/swarming_temp_dir/outputs/ct-nanobench-5/0/file 2",
       "gs://skia-perf/ct/10k/2012/05/14/12/"
     ],
     "env": {
       "AWS_CREDENTIAL_FILE": null,
       "BOTO_CONFIG": null
     },
     "name": "gsutil upload json output (10)",
     "~followup_annotations": [
       "@@@STEP_LINK@gsutil.upload@https://storage.cloud.google.com/skia-perf/ct/10k/2012/05/14/12/@@@"
     ]
   },
   {
     "name": "$result",
     "recipe_result": null,
     "status_code": 0
   }
 ]