Returns a neighbor attribute_map for given ip address if exists.

def get_neighbor_attribute_map(neigh_ip_address, route_dist=None,
                               route_family=VRF_RF_IPV4):
    """Returns a neighbor attribute_map for given ip address if exists."""
    core = CORE_MANAGER.get_core_service()
    peer = core.peer_manager.get_by_addr(neigh_ip_address)
    at_maps_key = const.ATTR_MAPS_LABEL_DEFAULT

    if route_dist is not None:
        at_maps_key = ':'.join([route_dist, route_family])
    at_maps = peer.attribute_maps.get(at_maps_key)
    if at_maps:
        return at_maps.get(const.ATTR_MAPS_ORG_KEY)
    else:
        return []