modified following tests to use innodb as default engine.
func_group.test
func_in_mrr_cost.test
func_in_icp.test
func_in_icp_mrr.test
func_in_all.test
func_in_mrr.test
func_in_none.test

Approved by : Shipra Jain <shipra.x.jain@oracle.com>
RB : 25328

Change-Id: If93e4b6defe0b8b15de4fed0699ffb83b7041bdb