Add CtsHibernationTestCases to postsubmit test mapping

Ensure CtsHibernationTestCases are running in postsubmit test mapping
configs.

Relnote: N/A (no user-visible or partner changes)
Bug: 288324294
Test: presubmit
Change-Id: I5dba19bdc83910b23e112267c8a3ecd6d424ba49