'Periodically runs to update Storage Service Catalog data.
The self.ssc attribute is updated with the following format.
{<flexvol_name> : {<ssc_key>: <ssc_value>}}'

def update_ssc(self, flexvol_map):

    LOG.info("Updating    storage    service    catalog    information    for    backend    '%s'", self.backend_name)
    ssc = {}
    for (flexvol_name, flexvol_info) in flexvol_map.items():
        ssc_volume = {}
        ssc_volume.update(flexvol_info)
        ssc_volume.update(self._get_ssc_flexvol_info(flexvol_name))
        ssc_volume.update(self._get_ssc_dedupe_info(flexvol_name))
        ssc_volume.update(self._get_ssc_mirror_info(flexvol_name))
        ssc_volume.update(self._get_ssc_encryption_info(flexvol_name))
        aggregate_name = ssc_volume.get('netapp_aggregate')
        ssc_volume.update(self._get_ssc_aggregate_info(aggregate_name))
        ssc[flexvol_name] = ssc_volume
    self.ssc = ssc
