Switch to using project-templates
Switch to using project-templates

In order to have more centralized configuration, switch the role
to use the project-template instead.

Depends-On: I2608fc5a0230436cebb0e6c579deae7bd4d7c209
Change-Id: If26a6248be6e941013511bcc6fd4d9a583607832

openstack/openstack-ansible-repo_server,openstack/openstack-ansible-repo_server