SUSE platform defaults.

WIP: python-mysql.rpm, openstack-keystone user+group
join paths on '/'
use new Boolean type for user/tenant_name attributes
Add quantum support for register resource

Quantum is having service_type == "network".
Implement support for grizzly release.

Added {public,admin}_endpoint to keystone.conf and updates paste configuration.
rely on the openstack-common cookbook for the mysql recipes
install client libraries depending on the database type
fix ip address get and refactor confusing block

the functionality of Hash#select has changed in ruby 1.9. It now returns
a hash pairs whereas it used to return an array of pairs