In some cases, the S3 server will not know about a certain build and
any attempt to open a coredump which was generated by this build will
fail, because the S3 server returns an empty/illegal response.
There is already a bypass for missing package-url in the S3 server
response, but this doesn't help in the case when the response is also
missing other metadata, like build-id and version info.
Extend this existig mechanism with a new --scylla-package-url flag,
which provides complete bypass. When provided, the S3 server will not be
queried at all, instead the package is downloaded from the link and
version metadata is extracted from the package itself.
Closesscylladb/scylladb#19769
79567c1c98