Openstack-Chef recipes for quantum+linuxbridge:

	- it is a draft (it just works) TODOs:
	- change hardcoded values in templates to chef variables,
	- place previous nova-setup code blocks for sec-groups,
	  floating ips and fixed networks in quantum recipes,
	- move quantum options from templates to higher level
	  (quantum.rb file in attributes)
	- add comments.