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

========

https://hg.mozilla.org/integration/gaia-central/rev/0ba4112681b1
Author: Zac Campbell <zcampbell@mozilla.com>
Desc: Revert "Revert "Bug 946205 - Re-enable Travis tests after 891882 merged" for mochitest 5 timeouts"

This reverts commit 213d4eff522a9cc557d659d7a2e7038a9935fe4a.

b2g/config/gaia.json

@@ -1,4 +1,4 @@
 {
-    "revision": "30ed848ece50d437c3ffa269878b30c76afd0cee", 
+    "revision": "0ba4112681b15cfae1380462425f50b223ea3807", 
     "repo_path": "/integration/gaia-central"
 }