Include the word 'member' with autogenerated optional member labels.

There were reports of confusion over what was being prompted for, hopefully
adding member will make things clearer.

ticket 1062

ipalib/plugins/baseldap.py

@@ -1062,7 +1062,7 @@ class LDAPModMember(LDAPQuery):
                 name = to_cli(ldap_obj_name)
                 doc = self.member_param_doc % ldap_obj.object_name_plural
                 yield List('%s?' % name, cli_name='%ss' % name, doc=doc,
-                           label=ldap_obj.object_name, alwaysask=True)
+                           label='member ' + ldap_obj.object_name, alwaysask=True)
 
     def get_member_dns(self, **options):
         dns = {}