Relax volume name restrictions on bulk operations.

We can't recall the exact reason why this was originally implemented;
likely to be as conservative as possible with our API design, and
since we've heard that teams have reasons for wanting to perform
bulk operations across multiple volumes, this change relaxes the
enforcement to allow those operations.

Bug: 154008412
Test: atest --test-mapping packages/providers/MediaProvider
Change-Id: I54c1647e687dadb0d236cca28fbdcf36e3aff1e8
1 file changed