Convert drm hal test to use VtsHalHidlTargetTestEnvBase

* The testEnvBase template is only used to register the testing hal.
* The service name is specifically determined by the test logic, so
  disable the feature for vts to run the test against all service
  instance (by setting HalServiceCombMode::NO_COMBINATION)

Bug: 64203181
Test: make vts
      vts-tradefed run vts -m VtsHalDrmV1_0Target
      vts-tradefed run vts -m VtsHalDrmV1_1Target

Change-Id: Ib2e005e8ccbc815067f0e9455fcd3e6c5ec151fb