Get the operational state of a systemd based container

    path
        path to the container parent
        default: /var/lib/lxc (system default)

        .. versionadded:: 2015.8.0

    CLI Example:

    .. code-block:: bash

        salt myminion lxc.systemd_running_state ubuntu

def systemd_running_state(name, path=None):
    '''
    Get the operational state of a systemd based container

    path
        path to the container parent
        default: /var/lib/lxc (system default)

        .. versionadded:: 2015.8.0

    CLI Example:

    .. code-block:: bash

        salt myminion lxc.systemd_running_state ubuntu

    '''
    try:
        ret = run_all(name,
                      'systemctl is-system-running',
                      path=path,
                      ignore_retcode=True)['stdout']
    except CommandExecutionError:
        ret = ''
    return ret