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

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https://hg.mozilla.org/integration/gaia-central/rev/ecde92711ca6
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Merge pull request #18825 from timdream/fix-reset-gaia

Bug 1003768 - Use |adb shell cat| instead of |adb pull|, r=gduan

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https://hg.mozilla.org/integration/gaia-central/rev/16f0e400615c
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 1003768 - Use |adb shell cat| instead of |adb pull|
Bumping manifests a=b2g-bump