Use port 1022 for all cluster nodes as SSH-port and fix some config-errors

I'm oversaw completely, that I have to change the SSH-port for all nodes
in the cluster otherwise I cannot provide a meaningful load-balancer for
the git-ssh port in it.

Additionally this allowed me to fix some config errors which I simply
oversaw.

roles/kube-config/tasks/main.yml

@@ -15,5 +15,5 @@
   lineinfile:
     path: "{{ lookup('env', 'HOME') }}/.kube/config"
     regexp: '^(\s*server: https://).*(:\d+)$'
-    line: \g<1>{{ k8s_api_endpoint }}\g<2>
+    line: \g<1>{{ api_endpoint }}\g<2>
     backrefs: yes