Improve Tuner VTS: Generate LnbRecord Combos

This CL allows the VTS to read a vendor's configuration file, determine
if the given devices could support the LnbRecord dataflow, and generate
all combinations of units (frontend, record filter, dvr, lnb)
to run them on corresponding integration tests.

Bug: b/182519645

Test: vts-tradefed run vts --module VtsHalTvTunerTargetTest. Manual
tests with different input configuration files.

Change-Id: I470d593195d3f6e81cea9758b5758ec47ad3d21c