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

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https://hg.mozilla.org/integration/gaia-central/rev/67e75b4310bc
Author: EragonJ <eragonj@eragonj.me>
Desc: Merge pull request #16896 from EragonJ/bug-979771

Bug 979771 - [DSDS] Data call icon on Utility Tray will not become blue

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https://hg.mozilla.org/integration/gaia-central/rev/e71c4fe284bc
Author: EragonJ <eragonj@eragonj.me>
Desc: Bug 979771 - [DSDS] Data call icon on Utility Tray will not become blue

- we would iterate mozMobileConnections now
- update unit tests
- refactor code
Bumping manifests a=b2g-bump