Use async/poll on drain tasks to prevent SSH connection timeouts (#13081)

roles/remove_node/pre_remove/tasks/main.yml

@@ -17,6 +17,8 @@
       --grace-period {{ drain_grace_period }}
       --timeout {{ drain_timeout }}
       --delete-emptydir-data {{ kube_override_hostname }}
+  async: "{{ (drain_timeout | regex_replace('s$', '') | int) + 120 }}"
+  poll: 15
   when:
     - groups['kube_control_plane'] | length > 0
     # ignore servers that are not nodes