DB-720 test case for clustering keys on partitioned tokudb tables

mysql-test/suite/tokudb/r/cluster_key_part.result

+set default_storage_engine='tokudb';
+drop table if exists t;
+create table t (
+x int not null,
+y int not null, 
+primary key(x)) 
+partition by hash(x) partitions 2;
+show create table t;
+Table	Create Table
+t	CREATE TABLE `t` (
+  `x` int(11) NOT NULL,
+  `y` int(11) NOT NULL,
+  PRIMARY KEY (`x`)
+) ENGINE=TokuDB DEFAULT CHARSET=latin1
+/*!50100 PARTITION BY HASH (x)
+PARTITIONS 2 */
+alter table t add clustering key(y);
+show create table t;
+Table	Create Table
+t	CREATE TABLE `t` (
+  `x` int(11) NOT NULL,
+  `y` int(11) NOT NULL,
+  PRIMARY KEY (`x`),
+  CLUSTERING KEY `y` (`y`)
+) ENGINE=TokuDB DEFAULT CHARSET=latin1
+/*!50100 PARTITION BY HASH (x)
+PARTITIONS 2 */
+drop table t;

mysql-test/suite/tokudb/t/cluster_key_part.test

+# Test that clustering keys can be created on partitioned tokudb tables
+
+source include/have_tokudb.inc;
+set default_storage_engine='tokudb';
+
+disable_warnings;
+drop table if exists t;
+enable_warnings;
+
+create table t (
+    x int not null,
+    y int not null, 
+    primary key(x)) 
+partition by hash(x) partitions 2;
+
+show create table t;
+
+alter table t add clustering key(y);
+
+show create table t;
+
+drop table t;