Add TEST_MAPPING to run the codeclist unit tests

also make sure sure that CodedListTest is in proper test_suites group.

Bug: 156965191
Test: atest CodecListTest
Test: atest in the frameworks/av/media/libmedia directory
Change-Id: I1383000864fec69fc2b7ec3067ef40c171f6f881
(cherry picked from commit f54b1c1f)
Merged-In: I1383000864fec69fc2b7ec3067ef40c171f6f881