compute selflinks return back `wwww.googleapis.com` as the domain,
which was causing a perma-diff. Fixing google.cloud's normalization
fixes that.
Fixing the following tests as well, since creating an instance
now works:
- gcp_compute_instance
- gcp_compute_instance_group
- gcp_compute_instance_group_manager
- gcp_compute_instance_template
- gcp_compute_region_autoscaler
- gcp_compute_region_instance_group_manager
- gcp_compute_target_instance
- gcp_compute_target_pool