Bumping gaia.json for 2 gaia revision(s) a=gaia-bump
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https://hg.mozilla.org/integration/gaia-2_2/rev/
1bb7fdc6e552
Author: autolander <bug.autolander@gmail.com>
Desc: Bug
1167336 - merge pull request #30210 from davidflanagan:bug1167336-v2.2 to mozilla-b2g:v2.2
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https://hg.mozilla.org/integration/gaia-2_2/rev/
91a6f9293266
Author: David Flanagan <dflanagan@mozilla.com>
Desc: Bug
1167336 - use <img> for Video app thumbnails instead of background-image
update failing unit test
(cherry picked from commit
d2a2b30b61e51efe27a521d2a9b815be4e9da49f)
updated to work with the old templating system in 2.2