Add prompt to upgrade node or delay before upgrade (#7168)

* Add prompt to upgrade node or delay before upgrade

* add docs

roles/upgrade/pre-upgrade/defaults/main.yml

@@ -3,3 +3,6 @@ drain_grace_period: 300
 drain_timeout: 360s
 drain_pod_selector: ""
 drain_nodes: true
+
+upgrade_node_confirm: false
+upgrade_node_pause_seconds: 0

roles/upgrade/pre-upgrade/tasks/main.yml

@@ -1,4 +1,19 @@
 ---
+# Wait for upgrade
+- name: Confirm node upgrade
+  pause:
+    echo: yes
+    prompt: "Ready to upgrade node ?"
+  when:
+    - upgrade_node_confirm
+
+- name: Wait before upgrade node
+  pause:
+    seconds: "{{ upgrade_node_pause_seconds }}"
+  when:
+    - not upgrade_node_confirm
+    - upgrade_node_pause_seconds != 0
+
 # Node Ready: type = ready, status = True
 # Node NotReady: type = ready, status = Unknown
 - name: See if node is in ready state