7cd0c0425e
This adds the new rax flex iad3 region to our clouds.yaml files and configures the cloud with ssh keys, networks, and security groups. This is the first step in getting this cloud enrolled with zuul. Once this is done we can boot a new mirror, then add the cloud to our resource list in zuul-providers. Change-Id: I23a43f9ef0718449129a89c910c58d09d1d09729