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

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https://hg.mozilla.org/integration/gaia-central/rev/1a0aad92af86
Author: Fabien Cazenave <fabien@cazenave.cc>
Desc: Merge pull request #12214 from fabi1cazenave/fdnTitle-bug916055

Bug 916055 - [FDN] the PIN2 dialog box always says “Disable FDN”, never “Enable FDN”, r=arthur

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https://hg.mozilla.org/integration/gaia-central/rev/7ec80b3ee772
Author: Fabien Cazenave <fabien@cazenave.cc>
Desc: Bug 916055 - [FDN] the PIN2 dialog box always says “Disable FDN”, never “Enable FDN”