drop support for 0.12 (#2171)

* all: drop support for 0.12 [ci skip]
* scripts: add more modules to blacklist for now
* update common deps for service modules

Author: stephenplusplus

package.json

@@ -50,8 +50,8 @@
     "datastore"
   ],
   "dependencies": {
-    "@google-cloud/common": "^0.12.0",
-    "@google-cloud/common-grpc": "^0.2.1",
+    "@google-cloud/common": "^0.13.0",
+    "@google-cloud/common-grpc": "^0.3.0",
     "arrify": "^1.0.0",
     "concat-stream": "^1.5.0",
     "create-error-class": "^3.0.2",
@@ -79,6 +79,6 @@
   },
   "license": "Apache-2.0",
   "engines": {
-    "node": ">=0.12.0"
+    "node": ">=4.0.0"
   }
 }