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

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https://hg.mozilla.org/integration/gaia-2_0/rev/d2e513f4d6bd
Author: Marcus Cavanaugh <m@mcav.com>
Desc: Merge pull request #20708 from mcav/clock-perf-5

Bug 1015386 - [Clock] Implement new startup loading events. r=hub
Conflicts:
	tests/performance/startup_events_test.js

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https://hg.mozilla.org/integration/gaia-2_0/rev/9a4eb8069e40
Author: Ryan VanderMeulen <rvandermeulen@mozilla.com>
Desc: Merge pull request #21469 from TheoChevalier/new-locales-2.0

Bug 1035480 - Add new locales to Gaia and get the same list on 2.0

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https://hg.mozilla.org/integration/gaia-2_0/rev/bf5c93e2dbb0
Author: TheoChevalier <theo.chevalier11@gmail.com>
Desc: Bug 1035480 - Add new locales to Gaia and get the same list on 2.0
Bumping manifests a=b2g-bump