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

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https://hg.mozilla.org/integration/gaia-central/rev/3bc2f2d2a638
Author: autolander <bug.autolander@gmail.com>
Desc: Bug 1019479 - merge pull request #29502 from azasypkin:bug-1019479-contact-recipient-in-draft to mozilla-b2g:master

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https://hg.mozilla.org/integration/gaia-central/rev/e72d670c0eaf
Author: Aleh Zasypkin <azasypkin@mozilla.com>
Desc: Bug 1019479 - [Message]The recipient which originally display as contact name will display as phone number after viewing the recipient details of a draft. Setting correct "contacts" source for the contact recipient added from draft. r=julien

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "777d01f4a2c7b41c4b02e3cf87715714ccc0590b", 
+        "git_revision": "3f704c06d52ecfcc3bf6333bae6fdf4bfdf0a08f", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "71d98e4d750c421605dd8a2f894c646fb6ed6571", 
+    "revision": "3bc2f2d2a63813cc90f20c688d7543a144cb2d93", 
     "repo_path": "integration/gaia-central"
 }