MariaRocks port: get rocksdb_sys_vars.rocksdb_deadlock_detect_basic to work

Author: spetrunia

storage/rocksdb/mysql-test/rocksdb_sys_vars/t/rocksdb_deadlock_detect_basic.test

@@ -14,7 +14,7 @@ INSERT INTO invalid_values VALUES('\'bbb\'');
 --let $read_only=0
 --let $session=1
 --let $sticky=1
---source suite/sys_vars/inc/rocksdb_sys_var.inc
+--source include/rocksdb_sys_var.inc
 
 DROP TABLE valid_values;
 DROP TABLE invalid_values;