Changing Rackspace to Openstack in Openstack doc
Merge pull request #8800 from techhat/openstack

Changing Rackspace to Openstack in Openstack doc
Typo fix
Merge pull request #8793 from pengyao/develop

fix #8792
Copy edit gce.rst
Merge pull request #8803 from holmboe/gce-copy-edits

Copy edit gce.rst