Comment 2 for bug 1316841

Oh, maybe all we need to do is call report.crash_signature().

    def crash_signature(self):
        '''Get a signature string for a crash.

        This is suitable for identifying duplicates.
        ....
        For suspend/resume failures, this concatenates whether it was a suspend
        or resume failure with the hardware identifier and the BIOS version, if
        it exists.
        '''