Bumping gaia.json for 1 gaia revision(s) a=gaia-bump

========

https://hg.mozilla.org/integration/gaia-central/rev/3ef42ba8baba
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 1059159 - Disable intermittent failing test, TEST-UNEXPECTED-FAIL | /builds/slave/test/gaia/apps/calendar/test/marionette/create_event_test.js r=kgrandon

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "8b9db1277c4fa76f4fdecacb1ba126ebeb640461", 
+    "revision": "3ef42ba8baba9117514495ede6697fc3385e8cd8", 
     "repo_path": "/integration/gaia-central"
 }