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

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https://hg.mozilla.org/integration/gaia-1_3/rev/d9f8fd67e38a
Author: Yuren Ju <yurenju@gmail.com>
Desc: Merge pull request #17435 from yurenju/wappush

Bug 986380 - fix unit test case "auth_test.js" in wappush app a=testonly

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https://hg.mozilla.org/integration/gaia-1_3/rev/727a6914e336
Author: Yuren Ju <yurenju@gmail.com>
Desc: Bug 986380 - fix unit test case "auth_test.js" in wappush app
Bumping manifests a=b2g-bump