Bumping gaia.json for 4 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/e4ead8057e0e
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #20730 from lightsofapollo/l10n-collections-shared

Bug 1018708 - Collection localizations for homescreen + add localizations to shared

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https://hg.mozilla.org/integration/gaia-central/rev/7f1563dc635f
Author: James Lal <james@lightsofapollo.com>
Desc: Bug 1018708 - Collection localizations for homescreen + add localizations to shared

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https://hg.mozilla.org/integration/gaia-central/rev/f88ecfced1a1
Author: Jonathan Griffin <jgriffin@mozilla.com>
Desc: Merge pull request #20577 from jonallengriffin/tbpl_config

Bug 1013201 - Add in-tree config file for gaia build options used in TBP...

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https://hg.mozilla.org/integration/gaia-central/rev/741105fd257a
Author: Jonathan Griffin <jgriffin@mozilla.com>
Desc: Bug 1013201 - Add in-tree config file for gaia build options used in TBPL, r=zac
Bumping manifests a=b2g-bump