Add CIPD GAE SDK recipe module and packager.

scripts/slave/recipe_modules/chromedriver/example.expected/Android_ChromeDriver_basic.json

 [
   {
     "cmd": [
       "python",
       "-u",
       "RECIPE_MODULE[depot_tools::bot_update]/resources/bot_update.py",
       "--spec",
       "cache_dir = '[GIT_CACHE]'\nsolutions = [{'deps_file': '.DEPS.git', 'managed': True, 'name': 'src', 'url': 'https://chromium.googlesource.com/chromium/src.git'}]",
       "--patch_root",
       "src",
@@ skipping 131 matching lines @@
       "@@@STEP_LOG_END@python.inline@@@"
     ]
   },
   {
     "cmd": [
       "python",
       "-u",
       "RECIPE_MODULE[build::zip]/resources/unzip.py"
     ],
     "name": "Download Prebuilts.unzip prebuilt",
-    "stdin": "{\"output\": \"[TMP_BASE]/prebuilt_tmp_1/unzipped\", \"zip_file\": \"[TMP_BASE]/prebuilt_tmp_1/r111111.zip\"}",
+    "stdin": "{\"output\": \"[TMP_BASE]/prebuilt_tmp_1/unzipped\", \"quiet\": false, \"zip_file\": \"[TMP_BASE]/prebuilt_tmp_1/r111111.zip\"}",
     "~followup_annotations": [
       "@@@STEP_NEST_LEVEL@1@@@"
     ]
   },
   {
     "cmd": [
       "python",
       "-u",
       "\nimport shutil\nimport sys\nshutil.move(sys.argv[1], sys.argv[2])\n",
       "[TMP_BASE]/prebuilt_tmp_1/unzipped/chromedriver",
@@ skipping 552 matching lines @@
     "~followup_annotations": [
       "@@@STEP_NEST_LEVEL@1@@@"
     ]
   },
   {
     "name": "$result",
     "recipe_result": null,
     "status_code": 0
   }
 ]