If a WWN has been provided in connection_properties, verify that the
found devices have that expected WWN. Fail the attachment if not. This
prevents cases where a device already exists on the host from an old
attachment that wasn't fully cleaned up, and the new attachment got
the same LUN. Using this old device could lead to data corruption.
Change-Id: I45a2221c0518213dc8132831c0bde9db4734da2b
Closes-Bug: 1813609