Add a deploy test for pubsub.

Author: SurferJeffAtGoogle

pubsub/composer.json

@@ -14,6 +14,9 @@
   "require-dev": {
     "symfony/dom-crawler": "~2.0",
     "symfony/css-selector": "~2.0",
-    "symfony/browser-kit": "~2.7"
+    "symfony/browser-kit": "~2.7",
+    "google/cloud-tools": "0.3.0",
+    "paragonie/random_compat": "^2.0",
+    "symfony/yaml": "^3.1"
   }
 }