Simple wrapper around cmd.run_all
    log_msg can contain {0} for stderr
    :return: True or stdout, False if retcode wasn't exitcode

def _run_all(cmd, log_lvl=None, log_msg=None, exitcode=0):
    '''
    Simple wrapper around cmd.run_all
    log_msg can contain {0} for stderr
    :return: True or stdout, False if retcode wasn't exitcode
    '''
    res = __salt__['cmd.run_all'](cmd)
    if res['retcode'] == exitcode:
        if res['stdout']:
            return res['stdout']
        else:
            return True

    if log_lvl is not None:
        log.log(LOG[log_lvl], log_msg, res['stderr'])
    return False