ldap_server: Fix install on Rocky Linux 8

roles/ldap_server/tasks/main.yml

@@ -1,4 +1,28 @@
 ---
+- name: check if plus repository is enabled
+  ansible.builtin.command:
+    argv:
+      - dnf
+      - config-manager
+      - --dump
+      - plus
+    warn: false
+  changed_when: false
+  register: result
+  when: ansible_distribution == "Rocky"
+
+- name: enable plus repository
+  ansible.builtin.command:
+    argv:
+      - dnf
+      - config-manager
+      - --set-enabled
+      - plus
+    warn: false
+  when:
+    - ansible_distribution == "Rocky"
+    - "'enabled = 1' not in result.stdout_lines"
+
 - name: install packages
   ansible.builtin.package:
     name: "{{ item }}"