Make ssh-port of servers initially configurable

It looks somehow random that the SSH-port was simply defined in the
configuration of the k3s-setup. It looks somehow "configurable" although
it isn't. Therefore I moved this setting to the correct place in the
terraform-setup.

An important side-note is that this change doesn't make it possible to
_change_ the ssh-port, though. Once decided for an port and I have to
stick to it until I tear down the cluster!

k3s/config.ini

@@ -12,5 +12,4 @@ k3s_version = v1.31.6+k3s1
 
 [server:vars]
 ansible_ssh_common_args = '-o StrictHostKeyChecking=accept-new'
-ansible_port = 1022
 k3s_version = v1.31.6+k3s1