Switch to cipd module in depot_tools

scripts/slave/recipes/webrtc/standalone.expected/client_webrtc_win_drmemory_light.json

 [
   {
     "cmd": [
       "python",
       "-u",
       "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
       "[BUILDER_CACHE]\\Win_DrMemory_Light",
       "511"
     ],
     "name": "makedirs checkout path",
@@ skipping 88 matching lines @@
     "name": "cleanup_temp"
   },
   {
     "cmd": [],
     "name": "ensure_goma"
   },
   {
     "cmd": [
       "python",
       "-u",
-      "RECIPE_MODULE[build::cipd]\\resources\\bootstrap.py",
+      "RECIPE_MODULE[depot_tools::cipd]\\resources\\bootstrap.py",
       "--platform",
       "windows-386",
       "--dest-directory",
       "[SLAVE_BUILD]\\cipd",
       "--json-output",
       "/path/to/tmp/json"
     ],
     "name": "ensure_goma.install cipd",
     "~followup_annotations": [
       "@@@STEP_NEST_LEVEL@1@@@",
@@ skipping 606 matching lines @@
     ],
     "cwd": "[BUILDER_CACHE]\\Win_DrMemory_Light",
     "name": "webrtc_nonparallel_tests"
   },
   {
     "name": "$result",
     "recipe_result": null,
     "status_code": 0
   }
 ]