Add cloudtail start/stop in recipe_modules/goma

scripts/slave/recipe_modules/goma/example.expected/linux.json

Index: scripts/slave/recipe_modules/goma/example.expected/linux.json
diff --git a/scripts/slave/recipe_modules/goma/example.expected/linux.json b/scripts/slave/recipe_modules/goma/example.expected/linux.json
index e06d461f3639d09fd6dfedfebe5233cc898ea4ce..970bb79a4d9b1f944df73521a7f4b8c05ea02d50 100644
--- a/scripts/slave/recipe_modules/goma/example.expected/linux.json
+++ b/scripts/slave/recipe_modules/goma/example.expected/linux.json
@@ -69,6 +69,23 @@
     "cmd": [
       "python",
       "-u",
+      "RECIPE_MODULE[build::goma]/resources/cloudtail_utils.py",
+      "--start-cloudtail",
+      "--cloudtail-path",
+      "/opt/infra-tools/cloudtail",
+      "--log-id",

[Yoshisato Yanagisawa, 2016/08/16 04:16:24]

might need to update JSON file?

[tikuta, 2016/08/16 05:09:55]

Done.

+      "goma_compiler_proxy"
+    ],
+    "env": {
+      "GOMA_SERVICE_ACCOUNT_JSON_FILE": "/creds/service_accounts/service-account-goma-client.json"
+    },
+    "name": "start cloudtail",
+    "stdout": "/path/to/tmp/"
+  },
+  {
+    "cmd": [
+      "python",
+      "-u",
       "[CACHE]/cipd/goma/goma_ctl.py",
       "stop"
     ],
@@ -81,6 +98,16 @@
     "cmd": [
       "python",
       "-u",
+      "RECIPE_MODULE[build::goma]/resources/cloudtail_utils.py",
+      "--killed-pid",
+      "12345"
+    ],
+    "name": "stop cloudtail"
+  },
+  {
+    "cmd": [
+      "python",
+      "-u",
       "RECIPE_PACKAGE_REPO[build]/scripts/slave/upload_goma_logs.py",
       "--upload-compiler-proxy-info"
     ],