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

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https://hg.mozilla.org/integration/gaia-central/rev/f63da6a0876a
Author: KWierso <kwierso@gmail.com>
Desc: Merge branch 'master' of https://github.com/mozilla-b2g/gaia

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https://hg.mozilla.org/integration/gaia-central/rev/9cfe547c33be
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Revert "Bug 1018708 - Collection localizations for homescreen + add localizations to shared"

This reverts commit 5e91d8c81885c93492b128dc1797c8fe1d98fe1a.

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https://hg.mozilla.org/integration/gaia-central/rev/6dadaa3613a0
Author: KWierso <kwierso@gmail.com>
Desc: Revert "Merge pull request #20730 from lightsofapollo/l10n-collections-shared" for Gaia-unit failures

This reverts commit a74ed1e3f982633950c2f93bbb46e71be6399da6, reversing
changes made to a07855aedfe8fba42dac3c8506549870c89432c7.
Bumping manifests a=b2g-bump