[vsphere|compute] restore default guest_id so setting it is optional
[rackspace|queues] adding the queues getting started guide
Merge pull request #2395 from domcleal/vmware-guest-id

[vsphere|compute] restore default guest_id so setting it is optional
openstack modifications

* add model and collection for security group rules
* add mock data for networks
* returns address in create_server mock
* proper security group rule mocks
* proper security group mocks
Merge pull request #2462 from engineyard/openstack

openstack modifications
[rackspace] apply documentation edits
Merge pull request #2468 from rackspace/queue_started

Queue started