Modify --endpoint-type to --os-endpoint-type for nova
Modify --endpoint-type to --os-endpoint-type for nova

We are trying to remove deprecated option:
--endpoint-type in https://review.openstack.org/#/c/317795/
so we should use --os-endpoint-type for nova now.

Change-Id: Ibd6fccdbd2af47eeeecda903e317d80eb77374cc

sebrandon1/tempest,openstack/tempest,cisco-openstack/tempest,masayukig/tempest,bigswitch/tempest,Juniper/tempest,cisco-openstack/tempest,vedujoshi/tempest,vedujoshi/tempest,sebrandon1/tempest,Juniper/tempest,openstack/tempest,Tesora/tesora-tempest,bigswitch/tempest,masayukig/tempest,Tesora/tesora-tempest