Bumping gaia.json for 4 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-1_4/rev/6384d5a413ed
Author: Florin Strugariu <bebef_1987@yahoo.com>
Desc: Merge pull request #20085 from AndreiH/bug_1020964

Bug 1020964 - [flame][v1.4] test_settings_power_save_mode.TestPowerSaveMode fails intermittently

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https://hg.mozilla.org/integration/gaia-1_4/rev/567864e30e03
Author: Andrei Hutusoru <andreihutusoru@P5069.(none)>
Desc: Bug 1020964 - [flame][v1.4] test_settings_power_save_mode.TestPowerSaveMode fails intermittently

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https://hg.mozilla.org/integration/gaia-1_4/rev/e6413c0de2fe
Author: Florin Strugariu <bebef_1987@yahoo.com>
Desc: Merge pull request #20067 from AndreiH/bug_1020206

Bug 1020206 - [flame][v1.4] Flicking is not done in test_radio_frequency_dialer

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https://hg.mozilla.org/integration/gaia-1_4/rev/866f98a4b6a2
Author: Andrei Hutusoru <andreihutusoru@P5069.(none)>
Desc: Bug 1020206 - [flame][v1.4] Flicking is not done in test_radio_frequency_dialer
Bumping manifests a=b2g-bump