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

========

https://hg.mozilla.org/integration/gaia-central/rev/f3eca2fcf00d
Author: Pavel Ivanov <pivanov@mozilla.com>
Desc: Merge pull request #20077 from pivanov/bug-1020914

Bug 1020914 - [FTU]Missing images

========

https://hg.mozilla.org/integration/gaia-central/rev/54fc3e8de383
Author: Pavel Ivanov <pivanov@mozilla.com>
Desc: Bug 1020914 - [FTU]Missing images
Bumping manifests a=b2g-bump