Bumping gaia.json for 1 gaia revision(s) a=gaia-bump

========

https://hg.mozilla.org/integration/gaia-central/rev/1db7d2c64278
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 1157092 - Disable permaorange apps/system/test/marionette/text_selection_test.js | Text selection > without lockscreen check functionality copy and paste across all trees independent of merges

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "9091ebaabd7a14401c8e0fcbee1aab8f8c7a418d", 
+        "git_revision": "bc4da42059215dec9261e3395dabf1ef1a1538dc", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "5d41afe3524dc9663f1496fb7eb17cc2a9556f4e", 
+    "revision": "1db7d2c64278ecb03bb14a6cb3e48e27a178b504", 
     "repo_path": "integration/gaia-central"
 }