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

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https://hg.mozilla.org/integration/gaia-central/rev/fdb1c13864eb
Author: viorelaioia <viorelaioia@gmail.com>
Desc: Merge pull request #21928 from AndreiH/bug_1040732

Bug 1040732 - Waiting for web page to load in test_cost_control_data_ale...

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https://hg.mozilla.org/integration/gaia-central/rev/028cee7a6074
Author: Andrei Hutusoru <andreihutusoru@P5069.(none)>
Desc: Bug 1040732 - Waiting for web page to load in test_cost_control_data_alert_mobile
Bumping manifests a=b2g-bump