Update guides.rst
Changed auth args in openstack modules
Changed wait to true/false in nova compute
Added region to nova keypair, fixed example
Fixes to glance image
Added nova security groups
Change keystone file name
Added cinder volume
Added nova snapshot
Nova compute fixes
Added nova volume
Added swift container
Added swift object
Added block device mapping to nova compute
Added nova flavors
Added nova quota
Added cinder quotas
Added network name to nova_compute