Bumping gaia.json for 4 gaia-central revision(s)

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https://hg.mozilla.org/integration/gaia-central/rev/bfebce5f22c0
Author: Jose Antonio Olivera Ortega <josea.olivera@gmail.com>
Desc: Merge pull request #12211 from jaoo/916044

Bug 916044 - [System] Allow the apn.json database generator to handle correctly MCC codes starting with 0. r=kaze

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https://hg.mozilla.org/integration/gaia-central/rev/2b3deb32e0ba
Author: Jose Antonio Olivera Ortega <josea.olivera@gmail.com>
Desc: Bug 916044 - [System] Allow the apn.json database generator to handle correctly MCC codes starting with 0.

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https://hg.mozilla.org/integration/gaia-central/rev/9877b8ad9fb3
Author: Jed Davis <jld@panix.com>
Desc: Merge pull request #12192 from jld/idb-storage-persistent

Bug 916009: Adapt gaia reference workloads to indexedDB changes.

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https://hg.mozilla.org/integration/gaia-central/rev/207b009a0b4c
Author: Jed Davis <jld@mozilla.com>
Desc: Bug 916009: Adapt gaia reference workloads to indexedDB changes in bug 785884.