Add options to set keystone api endpoints.

Updates to the runner templates to configure the keystone api
endpoints for the various services in a more flexible manner.
Set SERVER_NAME on torpedo/fog build tasks.

Updates the torpedo and fog build tasks so that we set SERVER_NAME
correctly. This fixes build issues in some configurations.

Also, adds an explicit failure when torpedo/fog fails to build.
Bump to kytoon 1.3.8.