Bumping gaia.json for 1 gaia revision(s) a=gaia-bump

========

https://hg.mozilla.org/integration/gaia-central/rev/a210b60770a2
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 983171 - Disable intermittent test, manipulate screenLock settings passcode is enabled, then get changed successfully
Bumping manifests a=b2g-bump