Addendum to bug #57916 : fixed the test suite to be less environment

dependent.

mysql-test/t/plugin_auth.test

@@ -17,7 +17,7 @@ connect(plug_con,localhost,plug,plug_dest);
 
 GRANT PROXY ON plug_dest TO plug;
 --echo test proxies_priv columns
---replace_column 7 xx
+--replace_column 1 xx 7 xx
 SELECT * FROM mysql.proxies_priv;
 --echo test mysql.proxies_priv;
 SHOW CREATE TABLE mysql.proxies_priv;