Merge pull request #86 from chamankang/master

identity_service_chef_role, pre_defined_network and restarting nova services
auto_version to 2.1.22
use packages
fix package_install refs
fix rake test
Merge pull request #90 from cloudware-cookbooks/package_install

Package install
auto_version to 2.1.23
add python-lxml to requires_packages