Add 'ldap' alias in ldap role.

roles/ldap/tasks/setup.yml

@@ -87,6 +87,12 @@
     regexp: "^(TLS_CACERT\\s+/etc/ssl/certs/ca-certificates.crt)$"
     replace: '#\1\nTLS_CACERT\t{{ certpub }}'
 
+- name: "make 'ldap' an alias hostname"
+  replace:
+    path: /etc/hosts
+    regexp: "^({{ ipaddr_lan | ipaddr('address') }}\\s.+)$"
+    replace: '\1 ldap'
+
 - name: enable pam-mkhomedir
   command: pam-auth-update --enable mkhomedir
   when: foo_pwd is defined and foo_pwd | length > 0