DO NOT MERGE: Pass in --user param when invoking audio commands.

This enables test to execute and pass in secondary users. We leave system
user to default to previous behavior, to prevent any change for phones in P and Q.

Bug: 137700953
Test: atest AudioRecordTest in system user and user 10
Change-Id: Ie9be95d4a010951946f0114775c82a64f70ba1b5
1 file changed