Helper function which leverages __context__ to keep from running 'systemctl
    status' more than once.

def _systemctl_status(name):
    '''
    Helper function which leverages __context__ to keep from running 'systemctl
    status' more than once.
    '''
    contextkey = 'systemd._systemctl_status.%s' % name
    if contextkey in __context__:
        return __context__[contextkey]
    __context__[contextkey] = __salt__['cmd.run_all'](
        _systemctl_cmd('status', name),
        python_shell=False,
        redirect_stderr=True,
        ignore_retcode=True
    )
    return __context__[contextkey]