Arvados

Off the top of my head:

• Support for Job knobs.
• Unsupported install methods. I think the stuff about calling install.sh in untested and hasn't been supported in a while. Even if we want to keep it, there are more immediate issues here, like the fact that Python SDK builds is installed with the long-gone build.sh.
• Resolving a git commit hash from the script version—I believe we're always relying on the API server to do this now. (this is still needed for running jobs in local mode)
• Unused variables like $dbh and $sth.