code: def _create_hosting_device_templates_from_config(self):
          
          hdt_dict = config.get_specific_config('cisco_hosting_device_template')
          attr_info = ciscohostingdevicemanager.RESOURCE_ATTRIBUTE_MAP[
              ciscohostingdevicemanager.DEVICE_TEMPLATES]
          adm_context = bc.context.get_admin_context()
  
          for hdt_uuid, kv_dict in hdt_dict.items():
              # ensure hdt_uuid is properly formatted
              hdt_uuid = config.uuidify(hdt_uuid)
              try:
                  self.get_hosting_device_template(adm_context, hdt_uuid)
                  is_create = False
              except ciscohostingdevicemanager.HostingDeviceTemplateNotFound:
                  is_create = True
              kv_dict['id'] = hdt_uuid
              kv_dict['tenant_id'] = self.l3_tenant_id()
              config.verify_resource_dict(kv_dict, True, attr_info)
              hdt = {ciscohostingdevicemanager.DEVICE_TEMPLATE: kv_dict}
              try:
                  if is_create:
                      self.create_hosting_device_template(adm_context, hdt)
                  else:
                      self.update_hosting_device_template(adm_context,
                                                          kv_dict['id'], hdt)
              except n_exc.NeutronException:
                  with excutils.save_and_reraise_exception():
                      LOG.error('Invalid hosting device template definition '
                                'in configuration file for template = %s',
                                hdt_uuid)
docs: To be called late during plugin initialization so that any hosting
          device templates defined in the config file is properly inserted in
          the DB.