Improve Tuner VTS: Generate DVR Playback Combos

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

Additionally, began storing section filter id's and eliminated the check
to see if they were stored already by utilizing the TearDown() function
between integration tests.

Bug: b/182519645

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

Change-Id: I8e8be258dce9927e755f9c8bdb41441f367a196b