Merge "Add IVold::destroyDsuMetadataKey()" am: cb581cc8de am: 3ae0c6737c am: 9502610f8e am: a182ca0ef1

Original change: https://android-review.googlesource.com/c/platform/system/vold/+/1452395

Change-Id: I3dd03f19011a5045425f665727b6c439d40c07df