Merge pull request #540 from linuxmaniac/vseva/mysql_warning

db_mysql: change log level from WARN to INFO for ping checks

modules/db_mysql/km_dbase.c

@@ -82,7 +82,7 @@ static int db_mysql_submit_query(const db1_con_t* _h, const str* _s)
 		if ((t - CON_TIMESTAMP(_h)) > my_ping_interval) {
 			for (i=0; i < (db_mysql_auto_reconnect ? 3 : 1); i++) {
 				if (mysql_ping(CON_CONNECTION(_h))) {
-					LM_WARN("driver error on ping: %s\n", mysql_error(CON_CONNECTION(_h)));
+					LM_INFO("driver error on ping: %s\n", mysql_error(CON_CONNECTION(_h)));
 					counter_inc(mysql_cnts_h.driver_err);
 				} else {
 					break;