Publish standalone binaries for arvados-client, other Go client tools
Most of our client tools can be installed by a user without root. The Python stuff is relatively easy in a virtualenv. The CLI SDK follows the same pattern, although it's less familiar to our users.
We don't provide an easy, documented way to do this for arvados-client. Users can download an appropriate package and just extract the binary from it, but that's advanced and we shouldn't ask users to do it.