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

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https://hg.mozilla.org/integration/gaia-central/rev/ee0e0dc1bbdd
Author: Jonathan Griffin <jgriffin@mozilla.com>
Desc: Merge pull request #12902 from jonallengriffin/marionette_errors

Bug 927404 - Fix reporting for failed gaiatest tests, r=dhunt, a=test-on...

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https://hg.mozilla.org/integration/gaia-central/rev/87eb2a7c6f30
Author: Jonathan Griffin <jgriffin@mozilla.com>
Desc: Bug 927404 - Fix reporting for failed gaiatest tests, r=dhunt, a=test-only