Bumping gaia.json for 1 gaia-central revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/3a4081c12033
Author: Anthony Ricaud <anthony@ricaud.me>
Desc: Revert "Merge pull request #13989 from ian-liu/settings/Bug926334_To_support_EAP-SIM_and_WPA-EAP_option_in_WLAN_settin"

This reverts commit 7c568287adbf97e3b1454512f0028ec273467bd1, reversing
changes made to 22f7ea4e7fa50d16834b838f3c356ca86810db24.

This is breaking test_settings_do_not_track.TestSettingsDoNotTrack.test_enable_do_not_track_via_settings_app
Bumping gaia.json for 2 gaia-central revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/1ca1ba9e5a87
Author: evanxd <itoyxd@gmail.com>
Desc: Merge pull request #14434 from evanxd/bug-945611

Bug 945611 - Run marionette tests for a specific app.

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https://hg.mozilla.org/integration/gaia-central/rev/a5e0fbfb25a4
Author: Evan Xd <itoyxd@gmail.com>
Desc: Bug 945611 - Run marionette tests for a specific app.