Bug 865175 - Fix communications import tests

This PR fix the tests that were commented on https://bugzilla.mozilla.org/show_bug.cgi?id=862719 to fix the Travis build, that was broken by https://github.com/mozilla-b2g/gaia/commit/574ea2af224bb2a389f33de84f848227cbc3cc5c

Please take a look @jmcanterafonseca