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

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https://hg.mozilla.org/integration/gaia-central/rev/71c9e718056a
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #24303 from KevinGrandon/bug_1071184_shut_up_system

Bug 1071184 - Log less junk

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https://hg.mozilla.org/integration/gaia-central/rev/ed5e8e526590
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 1071184 - Log less junk r=kgrandon

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "ae56804d33eab02b4887d73cee10829a7aa4012e", 
+    "revision": "71c9e718056a72406b0b6bd8c1f7710c170b2fb6", 
     "repo_path": "/integration/gaia-central"
 }