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

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https://hg.mozilla.org/integration/gaia-central/rev/0b54df4bf7d1
Author: dwi2 <dwi2@dwi2.com>
Desc: Merge pull request #14157 from dwi2/bug943794

Bug 943794 - Hide keyboard when setup-installed-app-dialog poped up r=alive

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https://hg.mozilla.org/integration/gaia-central/rev/f51533e09122
Author: tzhuang <tzhuang@mozilla.com>
Desc: Bug 943794 - Hide keyboard when setup-installed-app-dialog poped up

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https://hg.mozilla.org/integration/gaia-central/rev/004abf2fb884
Author: Zac <zcampbell@mozilla.com>
Desc: Merge pull request #14164 from askeing/944274

Bug 944274 - The self.lockscreen.is_locked is True when user unlock from...

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https://hg.mozilla.org/integration/gaia-central/rev/c6d470192a8e
Author: askeing <askeing@gmail.com>
Desc: Bug 944274 - The self.lockscreen.is_locked is True when user unlock from lockscreen to camera with passcode