remove "# node attribute" comments
add support for SUSE
grizzly support for glance (api + registry)
always set signing_dir location

keystoneclient tries to create the directory if it does not exist and the default is ~/keystone-signing
Signing dir should be always created and maintained with proper permissions.

In Grizzly release this directory is created even if pki authtentication is
not used.
Fix image_upload feature by installing glance client package on api server

API recipie can upload sample images to. We need to have glance client
installed for this feature to work.
postgresql support
user/tenant_enabled take a Boolean, not a String