Creates a new router

    CLI Example:

    .. code-block:: bash

        salt '*' neutron.create_router new-router-name

    :param name: Name of router to create (must be first)
    :param ext_network: ID or name of the external for the gateway (Optional)
    :param admin_state_up: Set admin state up to true or false,
            default:true (Optional)
    :param profile: Profile to build on (Optional)
    :return: Created router information

def create_router(name, ext_network=None,
                  admin_state_up=True, profile=None):
    '''
    Creates a new router

    CLI Example:

    .. code-block:: bash

        salt '*' neutron.create_router new-router-name

    :param name: Name of router to create (must be first)
    :param ext_network: ID or name of the external for the gateway (Optional)
    :param admin_state_up: Set admin state up to true or false,
            default:true (Optional)
    :param profile: Profile to build on (Optional)
    :return: Created router information
    '''
    conn = _auth(profile)
    return conn.create_router(name, ext_network, admin_state_up)