Bumping gaia.json for 2 gaia revision(s) a=gaia-bump

========

https://hg.mozilla.org/integration/gaia-central/rev/a28ce5d78a73
Author: autolander <bug.autolander@gmail.com>
Desc: Bug 1102959 - merge pull request #29452 from lissyx:bug1102959 to mozilla-b2g:master

========

https://hg.mozilla.org/integration/gaia-central/rev/c5acd207f192
Author: Alexandre Lissy <lissyx+github@lissyx.dyndns.org>
Desc: Bug 1102959 - Only show low battery prompt when installing FOTA package r=alive

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "6e403dbb863fb9ec41bd22b6583e2eff5045d78b", 
+        "git_revision": "eced99ac91514cd2499796bfb16765a6e31ccda4", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "bc8b875c1beaa6e72c4a0c328ccb751524f009a5", 
+    "revision": "a28ce5d78a73d0f4177affbd9c6a5c21d03490ed", 
     "repo_path": "integration/gaia-central"
 }