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

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https://hg.mozilla.org/integration/gaia-central/rev/8aa582ea08bb
Author: Andrew Sutherland <asutherland@asutherland.org>
Desc: Merge pull request #24788 from asutherland/email-remove-mozilla-com-autoconfig

Bug 1077881 - [email] Remove hardcoded mozilla.com autoconfig entry from gaia. r=jrburke

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https://hg.mozilla.org/integration/gaia-central/rev/6fc85c4c7c9e
Author: Andrew Sutherland <asutherland@asutherland.org>
Desc: Bug 1077881 - [email] Remove hardcoded mozilla.com autoconfig entry from gaia
Bumping manifests a=b2g-bump