LDAP: update config_schema_SUITE expectations

Author: michaelklishin

deps/rabbitmq_auth_backend_ldap/test/config_schema_SUITE_data/rabbitmq_auth_backend_ldap.snippets

@@ -119,7 +119,7 @@
  {db_lookup_bind,
   "auth_ldap.dn_lookup_bind.user_dn = username
    auth_ldap.dn_lookup_bind.password = password",
-  [{rabbitmq_auth_backend_ldap,[{dn_lookup_bind,{"username","password"}}]}],
+  [{rabbitmq_auth_backend_ldap,[{dn_lookup_bind,{"username",<<"password">>}}]}],
   [rabbitmq_auth_backend_ldap]},
 
  {db_lookup_bind_anon,
@@ -147,7 +147,7 @@
  {other_bind_pass,
   "auth_ldap.other_bind.user_dn = username
    auth_ldap.other_bind.password = password",
-  [{rabbitmq_auth_backend_ldap,[{other_bind,{"username","password"}}]}],
+  [{rabbitmq_auth_backend_ldap,[{other_bind,{"username",<<"password">>}}]}],
   [rabbitmq_auth_backend_ldap]},
 
  {ssl_options,