bluetooth: Functionality to play/record more files

Deploy script now downloads audio test data from cloud bucket.
StartPlayingAudioSubprocess and StartRecordingAudioSubprocess in
bluetooth_audio.py now allows for playing of files in downloaded
audio test data instead of previously hardcoded list of files.

BUG=b:162273392
TEST=bluetooth_AUSanity.au_hfp_*_dut_as_sink_*

Cq-Depend: chromium:2363929
Change-Id: I676c8220cc68589c514407520fdb287db30c879c
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/chameleon/+/2333307
Reviewed-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Reviewed-by: Daniel Winkler <danielwinkler@google.com>
Tested-by: Kshitij Shah <tij@google.com>
Commit-Queue: Michael Sun <michaelfsun@google.com>
2 files changed