Move testing ts on Cuttlefish under /data/ directory

/data directory is a proper place for test pusher to adb push the ts
during run time. It saves image size comparing to bundle the ts during
compiling.

Files under the /data directory could only be passed around by fd
instead of directly opening. This CL also changes the way the DVR VTS
reads the ts.

Also for virtual frontend, to read the shell data file, we need the
DVR playback to input the data when testing frontend.
This CL also changes the way default implementation reads the data -
from the dvr playback fmq.

Test: atest VtsHalTvTunerV1_0TargetTest
Bug: 153366959
Change-Id: I72a98e4c4c0328206da106fb1c3459745c1644b7