Add a fact checking xinetd service present

Upgrade rocky->master was failing at service xinetd missing

Change-Id: I5864ea4ba7364834ed7b47de64674ade87719e2e

docker/services/xinetd.yaml

@@ -47,9 +47,24 @@ outputs:
         config_image: ''
       config_settings: {}
       upgrade_tasks:
+        - when: step|int == 0
+          tags: common
+          block:
+            - name: Check if xinetd service is deployed
+              ignore_errors: True
+              command: systemctl is-enabled --quiet xinetd
+              register: xinetd_enabled_result
+            - name: Set fact xinetd_enabled
+              set_fact:
+                xinetd_enabled: "{{ xinetd_enabled_result.rc == 0 }}"
+            - name: "PreUpgrade step0,validation: Check if xinetd is running"
+              command: systemctl is-active --quiet xinetd
+              when: xinetd_enabled|bool
+              tags: validation
         - when: step|int == 2
           block:
             - name: stop and deactivate xinetd service
+              when: xinetd_enabled|bool
               service:
                 name: xinetd
                 state: stopped