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

========

https://hg.mozilla.org/integration/gaia-central/rev/a67e099458fd
Author: Zac <zcampbell@mozilla.com>
Desc: Bug 1004413 - test_ftu.py wait for languages to be listed rather than assert a=testonly r=me

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "4a67b4e4f948392acfef37069392193a4bc3b0f6", 
+    "revision": "a67e099458fd785b9de0dfc645d48ee727701ecd", 
     "repo_path": "/integration/gaia-central"
 }