Add --nobacktrace option because we have our own crash reporter tool that catches these
and with this option those are not caught.

[debugging] Add --nobacktrace option to make crash reporter tool get connman crashes.

Signed-off-by: Marko Saukko <marko.saukko@jolla.com>
Merge pull request #43 from mer-packages/backtrace

Add --nobacktrace option because we have our own crash reporter tool tha...