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

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https://hg.mozilla.org/integration/gaia-central/rev/30c80e4efa68
Author: gitmai <mri@tid.es>
Desc: Merge pull request #17922 from gitmai/bug-987142-CC-jshint-fix-2

Bug 987142 -[Cost Control] Fix jshint erros (second part)
r=jmcf

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https://hg.mozilla.org/integration/gaia-central/rev/34c2151a3299
Author: mai <mri@tid.es>
Desc: Bug 987142 - [CostControl] Fix jshint errors (second part)
Bumping manifests a=b2g-bump