Bumping gaia.json for 2 gaia-central revision(s)

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https://hg.mozilla.org/integration/gaia-central/rev/9eaceb4c4fab
Author: Michael Vines <mvines@codeaurora.org>
Desc: Merge pull request #11330 from alivedise/bugzilla/871916/remove-nexus-s-hack-in-gaia

Bug 871916 - Remove Nexus S hack in gaia. r=timdream

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https://hg.mozilla.org/integration/gaia-central/rev/12aadf6f7cdf
Author: Alive Kuo <alegnadise@gmail.com>
Desc: Bug 871916 - Remove Nexus S hack in gaia