Implemented universal logout

roles/web-svc-logout/vars/main.yml

@@ -0,0 +1,15 @@
+application_id:               "web-svc-logout"
+docker_repository_address:    "https://github.com/kevinveenbirkenbach/universal-logout"
+docker_pull_git_repository:   true
+container_port:               8000
+
+# The following line leads to that services which arent listed directly in the inventory, 
+# but are called over other roles, aren't listed here 
+# @todo implement the calling of also dependency domains (propably the easiest to write a script which adds all dependencies to group_names)
+logout_domains: >-
+  {{
+    (
+      [primary_domain] +
+      (applications | logout_domains(group_names))
+    ) | unique | join(',')
+  }}