'Start subprocess for deck.'

def start_deck(self):

    pid = self.get_deck_pid()
    if pid:
        print 'Deck    is    already    running    as    pid={pid}'.format(pid=pid)
        return pid
    path = os.path.join(self.installation.SUBSYSTEM_ROOT_DIR, 'deck/start_dev.sh')
    return self.run_daemon(path, [path])
