Bug 1086676 - Add a test to check notification when you miss a call from...

... a known contact
Most of our tests use [this][link] format for adding the link to moztrap test case. Let's use it here too.  
[link]:https://github.com/mozilla-b2g/gaia/blob/master/tests/python/gaia-ui-tests/gaiatest/tests/functional/camera/test_camera_multiple_shots.py#L18