Bumping gaia.json for 3 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/619aee196955
Author: Gareth Aye <gaye@mozilla.com>
Desc: Merge pull request #30575 from gaye/bug-1172363-followup

Bug 1172363 followup

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https://hg.mozilla.org/integration/gaia-central/rev/300346efb26d
Author: gaye <gaye@mozilla.com>
Desc: Bug 1172363 - Remove build/test/integration/node_modules_test.js

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https://hg.mozilla.org/integration/gaia-central/rev/ca77725d9f2a
Author: gaye <gaye@mozilla.com>
Desc: Revert "Revert "Bug 1172363 - gaia/package.json shouldn't depend on jsmarionette dependencies r=gaye""

This reverts commit bdc3410972358afb7ecc8f60d92b88aaf6c96f97.

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "bdc3410972358afb7ecc8f60d92b88aaf6c96f97", 
+        "git_revision": "e9dada4416f93b3d147a50ad6ee9288f079194ba", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "ee8d4b35b345618e2dbcf410bb7604ab4cbbe95f", 
+    "revision": "619aee1969556a909bcd85cbf123ca40bd1782a1", 
     "repo_path": "integration/gaia-central"
 }