Bumping gaia.json for 2 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/0947d3f423ba
Author: Florin Strugariu <bebef_1987@yahoo.com>
Desc: Merge pull request #17501 from viorelaioia/bug_985903

Bug 985903 - Investigate test_camera_capture_video.TestCamera intermitte...

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https://hg.mozilla.org/integration/gaia-central/rev/548534372463
Author: Viorela Ioia <viorelaioia@gmail.com>
Desc: Bug 985903 - Investigate test_camera_capture_video.TestCamera intermittent fail
Bumping manifests a=b2g-bump