Bug 1095219 - Fix failing smart-home-test/unit/card_manager_test.js and re-enable it



https://bugzilla.mozilla.org/show_bug.cgi?id=1095219
It works on my laptop. And I noticed a weird thing that card_manager_test didn't run at all on Gaia-Try Gu.

BTW, How could I run test to get the result like the log you paste it here?