Add rest endpoints for resource template generation.

Add api endpoints for generating a template based
on a resource implementation.

blueprint resource-template

Change-Id: Iebebad70befd1df6cd8989538cbb61350a17bc23
Add Cloud Server support for RHEL and CentOS.

Fixes bug #1205465

Change-Id: Iebe182680a3504eb6c918421d1433475bb3da8c5
Merge "Add Cloud Server support for RHEL and CentOS."
Merge "Add rest endpoints for resource template generation."