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

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https://hg.mozilla.org/integration/gaia-1_4/rev/c2eeed185d23
Author: AndreiH <andrei.hutusoru@softvision.ro>
Desc: Merge pull request #18169 from viorelaioia/bug_994630

Bug 994630 - [1.4] Fix failure in test_receive_active_sync_email.py

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https://hg.mozilla.org/integration/gaia-1_4/rev/43bd5396266e
Author: Viorela Ioia <viorelaioia@gmail.com>
Desc: Bug 994630 - [1.4] Fix failure in test_receive_active_sync_email.py
Bumping manifests a=b2g-bump