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

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https://hg.mozilla.org/integration/gaia-central/rev/5466d05ce810
Author: AndreiH <andrei.hutusoru@softvision.ro>
Desc: Merge pull request #19710 from AndreiH/bug_1016364

Bug 1016364 - [2.0] test_sms_to_dialer.TestDialerFromMessage is failing ...

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https://hg.mozilla.org/integration/gaia-central/rev/4ff5ac373c37
Author: Andrei Hutusoru <andreihutusoru@P5069.(none)>
Desc: Bug 1016364 - [2.0] test_sms_to_dialer.TestDialerFromMessage is failing intermittently

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https://hg.mozilla.org/integration/gaia-central/rev/bc60b44d92a1
Author: Evan Xd <itoyxd@gmail.com>
Desc: Bug 1014426 - Use switchToFrame to switch to home2 frame r=kgrandon
Bumping manifests a=b2g-bump