Fetches a list of all configured VPN services for a tenant

    CLI Example:

    .. code-block:: bash

        salt '*' neutron.list_vpnservices

    :param retrieve_all: True or False, default: True (Optional)
    :param profile: Profile to build on (Optional)
    :return: List of VPN service

def list_vpnservices(retrieve_all=True, profile=None, **kwargs):
    '''
    Fetches a list of all configured VPN services for a tenant

    CLI Example:

    .. code-block:: bash

        salt '*' neutron.list_vpnservices

    :param retrieve_all: True or False, default: True (Optional)
    :param profile: Profile to build on (Optional)
    :return: List of VPN service
    '''
    conn = _auth(profile)
    return conn.list_vpnservices(retrieve_all, **kwargs)