fix fc007 and indentation problem

add "services" dependency to metadata.rb
ensure that compute nodes includes openstack-common recipe
No l3-agent in compute nodes
remove configuration for physical network
set an attr for the quantum git repo and ref
depends on python ~> 1.4.0
install pip-requires using ubuntu packages to avoid compiling them on nodes
Merge pull request #37 from chamankang/develop

fix fc007 and indentation problem