add auto-clear-sql param to core

src/switch_core_db.c

@@ -214,6 +214,10 @@ SWITCH_DECLARE(void) switch_core_db_test_reactive(switch_core_db_t *db, char *te
 {
 	char *errmsg;
 
+	if (!switch_test_flag((&runtime), SCF_CLEAR_SQL)) {
+		return;
+	}
+
 	if (!switch_test_flag((&runtime), SCF_AUTO_SCHEMAS)) {
 		switch_core_db_exec(db, test_sql, NULL, NULL, NULL);
 		return;