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

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https://hg.mozilla.org/integration/gaia-central/rev/7e5b2c297555
Author: Florin Strugariu <bebef_1987@yahoo.com>
Desc: Merge pull request #19324 from AndreiH/bug_1011469

Bug 1011469 - Intermittent test_cost_control_reset_wifi.TestCostControlR...

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https://hg.mozilla.org/integration/gaia-central/rev/6849244bb3f9
Author: Andrei Hutusoru <andreihutusoru@P5069.(none)>
Desc: Bug 1011469 - Intermittent test_cost_control_reset_wifi.TestCostControlReset on v1.4
Bumping manifests a=b2g-bump