Merge pull request #8 from hyunsun/ng-model-grizzly

changed to get quantum-server version for patching
Merge pull request #9 from hyunsun/ng-model-grizzly

UCLOUDNG-303 : fix external network doesn't work
UCLOUDNG-303 : fix external netework doesn't work
Merge pull request #10 from chamankang/UCLOUDNG-303

UCLOUDNG-303 : fix external netework doesn't work
UCLOUDNG-315 : metadata_ip flag should be nova_metadata_ip in /etc/quantum/metadata_agent.ini
Merge pull request #11 from chamankang/UCLOUDNG-315

UCLOUDNG-315 : metadata_ip flag should be nova_metadata_ip in /etc/quant...
NG model patch update