Install ldap pkgs in ldap_config role

ansible/roles/ldap_config/tasks/main.yml

 ---
+- name: Install ldap packages
+  ansible.builtin.yum:
+    name: "{{ item }}"
+    state: present
+  loop:
+    - nss-pam-ldapd
+    - openldap
+    - openldap-clients
+    - openldap-servers
+    - sssd-ldap
+
 - name: Update nsswitch.conf to look for ldap
   ansible.builtin.replace:
     dest: /etc/nsswitch.conf