Merge "audio: Fix handling of relative XML include paths in VTS" into sc-dev am: 3456ce68 am: 384e1758 am: 35e146b1

Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/interfaces/+/15193448

Change-Id: Ib585d9053d31d357fdd9e18fa531aad0a89b2312