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

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https://hg.mozilla.org/integration/gaia-central/rev/a042d21e22e4
Author: Bob Silverberg <bob.silverberg@gmail.com>
Desc: Merge pull request #12477 from bebef1987/test

Bug 920528 - e.me tests still need some workwip

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https://hg.mozilla.org/integration/gaia-central/rev/9d44f291ad6a
Author: Bebe <bebe@mozilla.ro>
Desc: Bug 920528 - e.me tests still need some workwip r=zac bsilverberg|