Add support for ipv6 only cluster via "enable_ipv6only_stack_networks" (#11831)

tests/testcases/030_check-network.yml

@@ -7,7 +7,7 @@
     # TODO: source those from kubespray-defaults instead.
     # Needs kubespray-defaults to be decoupled from no-proxy stuff
     bin_dir: "/usr/local/bin"
-    kube_pods_subnet: 10.233.64.0/18
+    kube_pods_subnet: "{{ 'fd85:ee78:d8a6:8607::1:0000/112' if (enable_ipv6only_stack_networks | default(false)) else '10.233.64.0/18' }}"
 
   tasks:
 
@@ -115,7 +115,7 @@
               | length == 2
 
     - name: Curl between pods is working
-      command: "{{ bin_dir }}/kubectl -n test exec {{ item[0].metadata.name }} -- curl {{ item[1].status.podIP }}:8080"
+      command: "{{ bin_dir }}/kubectl -n test exec {{ item[0].metadata.name }} -- curl {{ item[1].status.podIP | ansible.utils.ipwrap}}:8080"
       with_nested:
       - "{{ pods }}"
       - "{{ pods }}"