fix compute instance + several tests

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

tests/integration/targets/gcp_compute_instance_group/aliases

@@ -1,2 +1 @@
-cloud/gcp
-unsupported
+cloud/gcp

tests/integration/targets/gcp_compute_instance_group/tasks/autogen.yml

@@ -19,6 +19,7 @@
     project: "{{ gcp_project }}"
     auth_kind: "{{ gcp_cred_kind }}"
     service_account_file: "{{ gcp_cred_file }}"
+    auto_create_subnetworks: true
     state: present
   register: network
 - name: delete a instance group
@@ -144,6 +145,7 @@
     project: "{{ gcp_project }}"
     auth_kind: "{{ gcp_cred_kind }}"
     service_account_file: "{{ gcp_cred_file }}"
+    auto_create_subnetworks: true
     state: absent
   register: network
   ignore_errors: true