Add NativeMediaDrmClearkeyTest to TreeHugger presubmit

Adding 8 or more tests to cover media drm ndk APIs
for TreeHugger presubmit.

Test: atest
  run atest in this directory which invokes the presubmit tests

Bug: 173646795
Change-Id: I036b1c56437568904826f8085848ffa5e911f658