move service task and handler to a separate role (see ansible issue 23389, 20603, 15902)

roles/ldap/tasks/main.yaml

@@ -1,3 +1,8 @@
+- include_role:
+    name: service
+  vars:
+    service_name: nscd
+
 - name: configure OpenLDAP (domain)
   debconf:
       name: 'slapd'

roles/ssh_server/tasks/main.yaml

@@ -1,5 +1,5 @@
-- include: service.yaml
-  # static: yes # see static include issue: https://github.com/ansible/ansible/issues/13485
+# We can not use include_role here since it not share thje connection with the current role
+- include: roles/service/tasks/main.yaml
   vars:
     service_name: ssh
     service_packages: