Improve Tuner VTS: Generate TimeFilter Combinations

This CL allows the VTS to read a vendor's configuration file, determine
if the given devices could support the TimeFilter dataflow, and generate
all combinations of units to run them on corresponding integration tests.
Additionally, the configuration file is checked to see if the vendors
provide the dataflow themselves. If not, the combinations are created.

Bug: b/182519645

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

Change-Id: Icdbf8961e9dc06fd979be953027409a0a197cba4