nagios-nrpe: old wrapper might be missing

nagios-nrpe/tasks/wrapper.yml

@@ -5,10 +5,16 @@
   include_role:
     name: remount-usr
 
+- name: check if old script is present
+  stat:
+    path: /usr/share/scripts/alerts_switch
+  register: old_alerts_switch
+
 - name: alerts_switch is at the right place
   command: "mv /usr/share/scripts/alerts_switch /usr/local/bin/alerts_switch"
   args:
     creates: /usr/local/bin/alerts_switch
+  when: old_alerts_switch.stat.exists
 
 - name: "copy alerts_switch"
   copy:
@@ -24,6 +30,7 @@
     src: /usr/local/bin/alerts_switch
     dest: /usr/share/scripts/alerts_switch
     state: link
+  when: old_alerts_switch.stat.exists
 
 - name: "copy alerts_wrapper"
   copy: