Make empty playbooks run fine

playbooks/knot.yml

@@ -1,5 +1,8 @@
 #!/usr/bin/env ansible-playbook
 ---
+- hosts: all
+  roles: []
+
 # WIP: Deploy authoritative DNS servers
 # - hosts: authoritative_dns
 #   vars:

playbooks/ldap_replica.yml

@@ -1,5 +1,8 @@
 #!/usr/bin/env ansible-playbook
 ---
+- hosts: all
+  roles: []
+
 # Clone LDAP on local geographic location
 # DON'T DO THIS AS IT RECREATES THE REPLICA
 #- hosts: ldap_replica

playbooks/postfix.yml

@@ -19,4 +19,4 @@
       username: service-user
       password: "{{ vault_serviceuser_passwd }}"
   roles:
-    - re2o-service
+    - re2o_service

playbooks/switchs-manager.yml

@@ -1,5 +1,8 @@
 #!/usr/bin/env ansible-playbook
 ---
+- hosts: all
+  roles: []
+
 # Deploy Re2o switch service
 # - hosts: switchs-manager.adm.auro.re
 #   vars:

playbooks/unifi.yml

@@ -1,5 +1,8 @@
 #!/usr/bin/env ansible-playbook
 ---
+- hosts: all
+  roles: []
+
 # Deploy Unifi Controller
 # - hosts: unifi-fleming.adm.auro.re,unifi-pacaterie.adm.auro.re
 #   roles: