Bumping gaia.json for 3 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/d4a0023950c6
Author: AndreiH <andrei.hutusoru@softvision.ro>
Desc: Merge pull request #17596 from bebef1987/fix_set

Bug 986329 - Fix test_settings_XXX.py with JavascriptException:

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https://hg.mozilla.org/integration/gaia-central/rev/d2dce9cd930f
Author: Bebe <bebe@mozilla.ro>
Desc: Bug 986329 - Fix test_settings_XXX.py with JavascriptException: TypeError: window.wrappedJSObject.Settings is undefined

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https://hg.mozilla.org/integration/gaia-central/rev/3d1670c17265
Author: Bebe <bebe@mozilla.ro>
Desc: Revert "Bug 986329 - Fix test_settings_XXX.py with JavascriptException: TypeError: window.wrappedJSObject.Settings is undefined"

This reverts commit fab38c4384733c3eed51ceaec2787c7d5962dcd3.
Bumping manifests a=b2g-bump