Linux installer does not work for JDK (HEAD) stream

[AdamBrousseau]

Artifacts do not have a jdk version in them so this check errors and the job fails.

Edit: It's actually the Archive step that is causing the job to fail since there is nothing to archive. I can avoid this by checking Do not fail build if archiving returns nothing but imo that should remain disabled to catch other problems.

[aahlenst]

The wrapper script create_installer_linux.sh infers some aspects of what should be packaged by looking at the binary tarball. This was the best solution I could come up with in the context of Jenkins because metadata isn't passed down to the installer jobs. Long-term, the wish is to decouple the job from the build job and rely on the API only.