Bumping gaia.json for 6 gaia-central revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/b9ac2c3db21a
Author: Ran Ben Aharon <ran@everything.me>
Desc: Merge pull request #14582 from EverythingMe/948994-disable-report

Bug 948994 - [e.me] Temporarily disable stats reporting [r=amirn]

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https://hg.mozilla.org/integration/gaia-central/rev/f0864cf37329
Author: Ran Ben Aharon <ran@ranbena.com>
Desc: Bug 948994 - [e.me] Temporarily disable stats reporting [r=amirn]

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https://hg.mozilla.org/integration/gaia-central/rev/baa48d63992a
Author: Hubert Figuière <hub@figuiere.net>
Desc: Merge pull request #14621 from hfiguiere/bug947259

Bug 947259 - Fix waitForEvent. r=julienw

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https://hg.mozilla.org/integration/gaia-central/rev/d9a185226e10
Author: Hubert Figuière <hub@figuiere.net>
Desc: Bug 947259 - Fix missing semi-colon

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https://hg.mozilla.org/integration/gaia-central/rev/d952bbfd36db
Author: Hubert Figuière <hub@figuiere.net>
Desc: Bug 947259 - Cleanup post review.

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https://hg.mozilla.org/integration/gaia-central/rev/7ac0c8f0c3d3
Author: Hubert Figuière <hub@figuiere.net>
Desc: Bug 947259 - Fix waitForEvent: marionetteScriptFinished is called from the right sandbox.