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

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https://hg.mozilla.org/integration/gaia-central/rev/e22108caddcd
Author: Luke Chang <lchang@mozilla.com>
Desc: Merge pull request #19089 from luke-chang/1002355_stingray_applications

Bug 1002355 - [Stingray] A helper to wrap functions of mozApps.mgmt, r=johnhu, r=gchen

========

https://hg.mozilla.org/integration/gaia-central/rev/e58ab54613fb
Author: Luke Chang <lchang@mozilla.com>
Desc: Bug 1002355 - [Stingray] A helper to wrap functions of mozApps.mgmt

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "453391ee03721b87b4fd7f5b0931a8b16a504c7b", 
+    "revision": "e22108caddcd2fc2846d94dda1a6dd5f0de02995", 
     "repo_path": "/integration/gaia-central"
 }