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

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https://hg.mozilla.org/integration/gaia-central/rev/0ba4112681b1
Author: Zac Campbell <zcampbell@mozilla.com>
Desc: Revert "Revert "Bug 946205 - Re-enable Travis tests after 891882 merged" for mochitest 5 timeouts"

This reverts commit 213d4eff522a9cc557d659d7a2e7038a9935fe4a.
Bumping manifests a=b2g-bump