Bumping gaia.json for 4 gaia revision(s) a=gaia-bump

========

https://hg.mozilla.org/integration/gaia-central/rev/8b01a33dedf6
Author: Gareth Aye <gaye@mozilla.com>
Desc: Merge pull request #16868 from gaye/bug-930784

Bug 930784 - Add option to run js ui tests in parallel

========

https://hg.mozilla.org/integration/gaia-central/rev/4444a9d8210a
Author: Gareth Aye <gaye@mozilla.com>
Desc: Bug 930784 - Add option to run js ui tests in parallel

========

https://hg.mozilla.org/integration/gaia-central/rev/e504675c44d3
Author: Hubert Figuière <hub@figuiere.net>
Desc: Merge pull request #14467 from hfiguiere/bug819080-perf

Bug 819080 - Add performance testing for the fmradio HAL r=julienw

========

https://hg.mozilla.org/integration/gaia-central/rev/285a9713e3be
Author: Hubert Figuière <hub@figuiere.net>
Desc: Bug 819080 - Add performance testing for the fmradio HAL
Bumping manifests a=b2g-bump