PT-116 Added --[no]use-insert-ignore

t/pt-online-schema-change/samples/pt-116.sql

@@ -0,0 +1,10 @@
+CREATE SCHEMA IF NOT EXISTS test;
+
+DROP TABLE IF EXISTS test.t1;
+
+CREATE TABLE test.t1 (
+    id        TINYINT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
+    notunique VARCHAR(200) NOT NULL
+);
+
+INSERT INTO test.t1(notunique) VALUES('test01'),('test01'),('test02');