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

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https://hg.mozilla.org/integration/gaia-2_1/rev/9cc6dca33097
Author: Fawad Hassan <ifadey@ymail.com>
Desc: Bug 990047 - Add a shared function to load JSON files

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https://hg.mozilla.org/integration/gaia-2_1/rev/4a7bed132c6b
Author: varada.sireesha <varada.sireesha@lge.com>
Desc: Bug 1062285 - [Costcontrol]Settings Panel is not translated (app is in background),if the language change occurs

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https://hg.mozilla.org/integration/gaia-2_1/rev/9b157012323a
Author: varada.sireesha <varada.sireesha@lge.com>
Desc: Bug 1061658 - [Costcontrol]Datalimit is in Red color and Done button is disabled

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https://hg.mozilla.org/integration/gaia-2_1/rev/7938c98b73db
Author: Fernando Rodriguez Sela <frsela@tid.es>
Desc: Bug 1026556 - Stk Timer Management Proactive Command error conditions not supported
Bumping manifests a=b2g-bump