Roll recipe dependencies (nontrivial).

scripts/slave/recipes/android/builder.expected/full_client_v8_fyi_Android_Builder.json

 [
   {
     "cmd": [],
     "name": "ensure_goma"
   },
   {
     "cmd": [
       "python",
       "-u",
       "RECIPE_MODULE[depot_tools::cipd]/resources/bootstrap.py",
@@ skipping 65 matching lines @@
       "1",
       "--output_json",
       "/path/to/tmp/json",
       "--revision",
       "src@origin/lkcr",
       "--revision",
       "src/v8@267739",
       "--output_manifest"
     ],
     "env": {
-      "PATH": "%(PATH)s:RECIPE_PACKAGE_REPO[depot_tools]"
+      "PATH": "RECIPE_PACKAGE_REPO[depot_tools]:%(PATH)s"
     },
     "name": "bot_update",
     "~followup_annotations": [
       "@@@STEP_TEXT@Some step text@@@",
       "@@@STEP_LOG_LINE@json.output@{@@@",
       "@@@STEP_LOG_LINE@json.output@  \"did_run\": true, @@@",
       "@@@STEP_LOG_LINE@json.output@  \"fixed_revisions\": {@@@",
       "@@@STEP_LOG_LINE@json.output@    \"src\": \"origin/lkcr\", @@@",
       "@@@STEP_LOG_LINE@json.output@    \"src/v8\": \"267739\"@@@",
       "@@@STEP_LOG_LINE@json.output@  }, @@@",
@@ skipping 213 matching lines @@
     "~followup_annotations": [
       "@@@STEP_LINK@gsutil.upload@https://storage.cloud.google.com/v8-android/v8_android_perf_rel/full-build-linux_267739.zip@@@"
     ]
   },
   {
     "name": "$result",
     "recipe_result": null,
     "status_code": 0
   }
 ]