Bug 938207 - [Dialer] Intermittent Travis Unit Test Failure: dialer/call_log_db Two calls, same group, different hour Add a call: Error: timeout of 2000ms exceeded r=etienne

Really use a timeout of 20s now!
Merge pull request #14651 from julienw/938207-try-2

Bug 938207 - [Dialer] Intermittent Travis Unit Test Failure: dialer/call...