Bumping gaia.json for 2 gaia-1_3 revision(s) a=gaia-bump
Truncated some number of revisions since the previous bump.

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https://hg.mozilla.org/integration/gaia-1_3/rev/42be4d652c63
Author: Gregor Wagner <anygregor@gmail.com>
Desc: Merge pull request #14759 from julienw/951128-use-gecko-28

Bug 951128 - Travis pulls wrong gecko version for 1.3 branch r=gwagner

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https://hg.mozilla.org/integration/gaia-1_3/rev/3daf4af9a80c
Author: Julien Wajsberg <felash@gmail.com>
Desc: Bug 951128 - Travis pulls wrong gecko version for 1.3 branch r=gwagner