Bumping gaia.json for 1 gaia-central revision(s)

========

https://hg.mozilla.org/integration/gaia-central/rev/0c3ffaf3cb18
Author: b2gautomation <jonallengriffin@gmail.com>
Desc: Bug 907941 - gaia-ui-tests-pushbot (see bug)

b2g/config/gaia.json

@@ -1,4 +1,4 @@
 {
-    "revision": "5b65865073063023076f06804ba67d32a02c6c90", 
+    "revision": "0c3ffaf3cb180a37ee1b00fb17635e160f2df7dd", 
     "repo_path": "/integration/gaia-central"
 }