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

========

https://hg.mozilla.org/integration/gaia-central/rev/bc9f95a5573b
Author: Florin Strugariu <bebef_1987@yahoo.com>
Desc: Merge pull request #19879 from viorelaioia/bug_1018997

Bug 1018997 - Unxfail and fix test_ftu_skip_tour.py

========

https://hg.mozilla.org/integration/gaia-central/rev/cd0286c3f187
Author: Viorela Ioia <viorelaioia@gmail.com>
Desc: Bug 1018997 - Unxfail and fix test_ftu_skip_tour.py
Bumping manifests a=b2g-bump