Checks if a service is UP

    CLI Example:

    .. code-block:: bash

        salt '*' netscaler.service_up 'serviceName'

def service_up(s_name, **connection_args):
    '''
    Checks if a service is UP

    CLI Example:

    .. code-block:: bash

        salt '*' netscaler.service_up 'serviceName'
    '''
    service = _service_get(s_name, **connection_args)
    return service is not None and service.get_svrstate() == 'UP'