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

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https://hg.mozilla.org/integration/gaia-2_0/rev/a17dc5d2375a
Author: chirarobert <robert.chira@softvision.ro>
Desc: Merge pull request #22717 from viorelaioia/bug_1040063_v2.0

Bug 1040063 - [v2.1][v2.0] Intermittent test_settings_do_not_track.py fa...

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https://hg.mozilla.org/integration/gaia-2_0/rev/c81ba19d6c70
Author: Viorela Ioia <viorelaioia@gmail.com>
Desc: Bug 1040063 - [v2.1][v2.0] Intermittent test_settings_do_not_track.py failure
Bumping manifests a=b2g-bump