Specify port in known_hosts when adding cluster nodes.

Fixes #221

Author: lae

tasks/pve_add_node.yml

@@ -3,7 +3,7 @@
   - name: Identify the SSH public key and SSH addresses of initial cluster host
     ansible.builtin.set_fact:
       _pve_cluster_host_key: "{{ ' '.join((hostvars[_init_node]._pve_ssh_public_key.content | b64decode).split()[:-1]) }}"
-      _pve_cluster_host_addresses: "{{ hostvars[_init_node].pve_cluster_ssh_addrs | join(',') }}"
+      _pve_cluster_host_addresses: "{{ hostvars[_init_node].pve_cluster_ssh_addrs | map('regex_replace', '^(.*)$', (pve_ssh_port == 22) | ternary('\\1', '[\\1]:' + (pve_ssh_port | string))) | join(',') }}"
 
   - name: Temporarily mark that cluster host as known in root user's known_hosts
     ansible.builtin.blockinfile: