Change Rackspace namespace according to shardy's suggestion

Change-Id: Id9307e3b8634624afcb87f0f7fce1111629996a0
Install heat-cfntools using yum method

Change-Id: I6b94b69e90b7689a507124cb1fd9507c06a9089e
Add deleted parts back to _build_userdata.  Fix userdata permissions.

Change-Id: I09ad0fb5ec36243735d23ba74f4c5cf71343e25f
Inherit from instance.Instance.

Change-Id: Ie13510f66d2dd132ff0f13d9b30c4664e020d8d7
Add cloud_server to default resources to load.

Change-Id: Ie74c70c54822cd69e62952b1d00878d2436c1993