Updated deis-cookbook SHA.

Author: mboersma

Berksfile.lock

@@ -12,7 +12,7 @@
     "deis": {
       "locked_version": "0.5.0",
       "git": "https://github.com/opdemand/deis-cookbook.git",
-      "ref": "e172d9f1347f9876eda626866cf0c45a3ceaea64"
+      "ref": "7f4e0cd7bb9f4338d1022f7de3a6a70d71fbf1e0"
     },
     "docker": {
       "locked_version": "0.30.0"