Support both IPv4/IPv6 proxy universally in CVMFS setup

cesnet-central/playbooks/cvmfs.yaml

@@ -28,7 +28,7 @@
         mode: 0644
         content: |
           Acquire::http::Proxy {
-              cvmrepo.web.cern.ch "http://[{{ groups['ingress'][0] }}]:3128";
+              cvmrepo.web.cern.ch "http://{{ groups['ingress'][0] | ansible.utils.ipwrap }}:3128";
           };
     - name: Install and setup cvmfs apt repository
       vars:
@@ -55,7 +55,7 @@
         dest: /etc/cvmfs/default.local
         mode: 0644
         content: |
-          CVMFS_HTTP_PROXY=http://[{{ groups['ingress'][0] }}]:3128
+          CVMFS_HTTP_PROXY=http://{{ groups['ingress'][0] | ansible.utils.ipwrap }}:3128
     - name: Setup and mount cvmfs repository {{ item }}
       ansible.posix.mount:
         path: /cvmfs/{{ item }}

requirements.yml

 ---
 collections:
   - ansible.posix
+  - ansible.utils
   - community.general
   - community.hashi_vault
 roles: