MariaRocks: make rocksdb.issue495 declare it uses partitioning

storage/rocksdb/mysql-test/rocksdb/r/issue495.result

 drop table if exists t;
-Warnings:
-Note	1051	Unknown table 'test.t'
 create table t (
 a int,
 b int,

storage/rocksdb/mysql-test/rocksdb/t/issue495.test

+--source include/have_partition.inc
+--disable_warnings
 drop table if exists t;
+--enable_warnings
+
 create table t (
   a int,
   b int,