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

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https://hg.mozilla.org/integration/gaia-central/rev/fd17e0f64eed
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Revert "Bug 1015295 - [Keyboard] Update to use gaia-header"

This reverts commit 450e38988ff7a95ad71ad719e8b87a98f90a8329.

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https://hg.mozilla.org/integration/gaia-central/rev/281153e83a3f
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 1017831 - Disable intermittent test in settings/test/unit/sim_settings_helper_test.js
Bumping manifests a=b2g-bump