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

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https://hg.mozilla.org/integration/gaia-2_0/rev/a9121b9df4c6
Author: Florin Strugariu <bebef_1987@yahoo.com>
Desc: Merge pull request #21020 from AndreiH/bug_1030079_v2.0

Bug 1030079 - Fix intermittent fail for test_call_contact.TestContacts

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https://hg.mozilla.org/integration/gaia-2_0/rev/3e69fa8fe15c
Author: Andrei Hutusoru <andreihutusoru@P5069.(none)>
Desc: Bug 1030079 - Fix intermittent fail for test_call_contact.TestContacts
Bumping manifests a=b2g-bump