failed to retrieve vnfd on tacker horizon

Hello,

After install the tacker-horizon-master (previously it's 0.5.0), the tacker horizon failed to retrieve VNF catalog with 'Error: Unable to get instances'. it's failed in function get_vnfcatalog_data() with an except.

the root cause is clear now that it was caused by code change in tacker _make_service_types_list().

on tacker 0.5.0, the code:
 178 def _make_service_types_list(self, service_types):
 179 return [{'id': service_type.id,
 180 'service_type': service_type.service_type}
 181 for service_type in service_types]

on tacker master, the code:
 176 def _make_service_types_list(self, service_types):
 177 return [service_type.service_type
 178 for service_type in service_types]

So the new code will return a list with string element inside. This will caused an except in line 56 below of the function get_vnfcatalog_data():
 |- 53 services = vnfd['service_types']
|| 54 vnfd_services = []
|| 55 for s in services: ## services now is, e.g. [u'vnfd']
|| 56 if s['service_type'] != 'vnfd':
||- 57 vnfd_services.append(s['service_type'])

the code may be udpated to:
                            services = vnfd['service_types']
                            vnfd_services = []
                           for s in services: ## services now is, e.g. [u'vnfd']
                                  vnfd_services.append(s)

Merry Christmas and Happy New Year.

futangw