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

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https://hg.mozilla.org/integration/gaia-central/rev/f2784b078a4b
Author: Wilson Page <wilsonpage@me.com>
Desc: Merge pull request #17902 from wilsonpage/bug/988108

Bug 988108 - [camera][madai] capitalization corrections

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https://hg.mozilla.org/integration/gaia-central/rev/14b0dd615333
Author: Wilson Page <wilsonpage@me.com>
Desc: Bug 988108 - [camera][madai] capitalization corrections

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "67a734858540e74ec73f74c11b1c1cce157d605a", 
+    "revision": "f2784b078a4b58c1f0af8238d5325d0f05dc9fc0", 
     "repo_path": "/integration/gaia-central"
 }