Bumping gaia.json for 3 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/f705a3f96020
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 1037194 - Disable intermittent gaia-integration | TEST-UNEXPECTED-FAIL | /builds/slave/test/gaia/apps/verticalhome/test/marionette/app_hosted_use_cached_icon_test.js | Vertical Home - Hosted app cached icon fetch fallback to default icon

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https://hg.mozilla.org/integration/gaia-central/rev/00b2f30e17fc
Author: Etienne Segonzac <etienne@segonzac.info>
Desc: Merge pull request #21495 from weigao123/bug996863-master

Bug 996863 - [master] show warn message when emergencyOnly. r=Etienne.

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https://hg.mozilla.org/integration/gaia-central/rev/567e3e41d948
Author: wei.gao <wei.gao@spreadtrum.com>
Desc: Bug 996863 - [master] show warn message when emergencyOnly. r=Etienne.
Bumping manifests a=b2g-bump