PT-207 Fixed tests

t/pt-online-schema-change/samples/pt-207.sql

@@ -0,0 +1,9 @@
+CREATE SCHEMA IF NOT EXISTS test;
+USE test;
+DROP TABLE IF EXISTS t1;
+CREATE TABLE `test`.`t1` (
+`id` int(11) NOT NULL,
+`f2` int(11) DEFAULT NULL,
+`f3` varchar(255) CHARACTER SET latin1 COLLATE latin1_german1_ci,
+PRIMARY KEY (`id`)
+) ENGINE=RocksDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;