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

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https://hg.mozilla.org/integration/gaia-central/rev/e69a189e4070
Author: Florin Strugariu <bebef_1987@yahoo.com>
Desc: Merge pull request #16133 from zacc/bug_964842

Bug 964842 - Merge test_bluetooth_discoverable and test_settings_bluetoo...

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https://hg.mozilla.org/integration/gaia-central/rev/3838cd5f1721
Author: Zac Campbell <zcampbell@mozilla.com>
Desc: Bug 964842 - Merge test_bluetooth_discoverable and test_settings_bluetooth.py

b2g/config/gaia.json

@@ -1,4 +1,4 @@
 {
-    "revision": "4ad25c0efbf4d29130c970d3b2a9f0fc074c177c", 
+    "revision": "e69a189e40702466f21353b5340f789c9a788517", 
     "repo_path": "/integration/gaia-central"
 }