add manager logic

ansible/roles/openldap_server/tasks/find_database.yaml

@@ -0,0 +1,10 @@
+- name: Find main LDAP database DN
+  ansible.builtin.command: >
+    ldapsearch -Y EXTERNAL -H ldapi:/// \
+    -b cn=config '(olcSuffix={{ ldap_basedn }})' dn
+  register: ldap_db_dn
+  changed_when: false
+
+- name: Set fact for main database DN
+  ansible.builtin.set_fact:
+    ldap_main_db_dn: "{{ ldap_db_dn.stdout_lines | select('match','^dn:') | first | regex_replace('^dn: ','') }}"