LDAP authentication should use the configured port

* tmpl/sunstone-ldap_auth.conf: use ldap_port variable

Ref: #20060

tmpl/sunstone-ldap_auth.conf

@@ -11,13 +11,11 @@ server 1:
 
     # Ldap server
     :host: %%adresse_ip_ldap
+    :port: %%ldap_port
 %if %%getVar('ldap_tls', 'non') == 'oui'
-    :port: 636
 
     # Uncomment this line for tls conections
     :encryption: :simple_tls
-%else
-    :port: 389
 %end if
 
     # base hierarchy where to search for users and groups