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

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https://hg.mozilla.org/integration/gaia-2_1/rev/ef0027627c6b
Author: Jose M. Cantera <jmcanterafonseca@gmail.com>
Desc: Bug 1068814 - [Contacts] Setting ICE contact with only a phone number does not show on ICE contacts settings screen

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https://hg.mozilla.org/integration/gaia-2_1/rev/35dc3ee93b67
Author: Jose M. Cantera <jmcanterafonseca@gmail.com>
Desc: Bug 1068098 - [Contacts] Deleting a comment on a contact causes all other comments to disappear on edit screen

Conflicts:
	apps/communications/contacts/test/unit/mock_form_dom.js.html

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https://hg.mozilla.org/integration/gaia-2_1/rev/55f9db9bef36
Author: albertopq <apastor@mozilla.com>
Desc: Bug 1055746 - Statusbar color inconsitency

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https://hg.mozilla.org/integration/gaia-2_1/rev/90ff27854916
Author: crdlc <crdlc@tid.es>
Desc: Bug 1068611 - [Contacts] [Regression] When importing contacts from Gmail the last imported date is not updated
Bumping manifests a=b2g-bump