DO NOT MERGE) ExifInterface: Provide backward compatibility

ExifInterface.saveAttribute() didn't throw UnsupportedOperationException
before. Use IOException instead of UnsupportedOperationException for
backward compatibility.

Bug: 30936376, Bug: 32068647, Bug: 31319086
Change-Id: Iacc7b4d91d49edd7bece8f2e738a633a91025eca