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

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https://hg.mozilla.org/integration/gaia-central/rev/fd275a293099
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #20257 from KevinGrandon/bug_1022971_vertical_rename_all_the_things

Bug 1022971 - Rename Icon grid object to Mozapp

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https://hg.mozilla.org/integration/gaia-central/rev/e2f679da6a71
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 1022971 - Rename Icon grid object to Mozapp r=lightsofapollo
Bumping manifests a=b2g-bump