fix tinc_vpn variable

common.yml

@@ -13,6 +13,11 @@
     - fail: msg="The variable 'hostname' in variables.yml, has to be set to somethings else than CHANGEME"
       when: '"CHANGEME" in hostname'
 
+    - fail: msg="The variable 'tinc_vpn' in variables.yml, has to be set to somethings else than CHANGEME"
+      when: '"CHANGEME" in tinc_vpn'
+
+###
+
     - name: change hostname to myserver
       hostname:
         name: "{{ hostname }}"

variables.yml

@@ -1,8 +1,8 @@
 users:
   - CHANGEME
 hostname: CHANGEME
+tinc_vpn: CHANGEME
 #
-tinc_vpn: vpn
 compose_ver: 1.25.4
 singularity_go_ver: 1.13.6
 singularity_ver: 3.5.2