This method must be called by user classes
        composite steps could create several logs, this mixin functions will write
        to the last one.

def addLogForRemoteCommands(self, logname):
        """This method must be called by user classes
        composite steps could create several logs, this mixin functions will write
        to the last one.
        """
        self.rc_log = self.addLog(logname)
        return self.rc_log