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

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https://hg.mozilla.org/integration/gaia-2_1/rev/ba5a93deb754
Author: Edgar Chen <echen@mozilla.com>
Desc: Bug 1083541 - [Costcontrol] Showing error screen if card state is 'unknown'. r=mai

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https://hg.mozilla.org/integration/gaia-2_1/rev/0152800ed214
Author: Michael Henretty <michael.henretty@gmail.com>
Desc: Bug 1082885 - Make IME Menu SHB aware

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https://hg.mozilla.org/integration/gaia-2_1/rev/6e2254ae3ef7
Author: Luke Chang <lchang@mozilla.com>
Desc: Bug 1082456 - The buttons of the fullscreen permission dialog become "Don't share / Share" abnormally after the geolocation permission dialog is shown previously
Bumping manifests a=b2g-bump