
I have a case where a user provided the checksum URL with SHA256 checksums, while Metal3 defaulted os_hash_algo to "md5". We're going to change the Metal3 defaults in the next API version, but for now let us issue a clear warning in such case. Closes-Bug: #2085331 Change-Id: Ie4e62a378dc4a2089944f4302df3a8671b7c960f