Add TestStableBufferIdAndHardwareBuffer

Verifies a Dvr{Read,Write}BufferQueue contains the same set of
Dvr{Read,Write}Buffer(s) during their lifecycles. And for the same
buffer_id, the corresponding AHardwareBuffer handle stays the
same. User of DVR API need to make sure buffers from a queue can be
cached by buffer_id.

Bug: 64208560
Test: DvrApi-test
Change-Id: I1f89c49061b8727bb6a321201b1556b5ceffc9a9