Cleanup of site.yml

Whitespace, play/task naming, remove unused include naming
Install keystonemiddleware

Keystone client is deprecating keystoneclient.middleware.auth_token in
favor of keystonemiddleware.auth_token. Since we are using auth tokens,
install this additional python library so we can authenticate auth
tokens using it.
Use keystonemiddleware instead of keystoneclient.middleware
clean up the monitoring playbook stack

task naming, white spacing
Merge pull request #602 from blueboxgroup/cleanup-site

Cleanup of site.yml
Merge pull request #604 from blueboxgroup/keystonemiddleware

Keystonemiddleware
Merge pull request #606 from blueboxgroup/cleanup-monitoring

clean up the monitoring playbook stack
Update python-novaclient and python-neutronclient to meet neutron icehouse requirements
update glance, horizon, keystone, neutron and nova to stable/icehouse
Hide external networks from launch instance workflow
Hide Neutron LBaaS in Horizon
Upgrade Neutron to icehouse
neutron nova notifications
Neutron: nova notification config