Our various nodepool launcher configs have gotten out of sync with
recent additions. Try to match them up better by adding rockylinux
and openeuler to places where they were missing. In particular, this
addresses an inconsistency on nl04 which caused the service to crash
at last restart due to rockylinux missing from the main diskimages
list.
Change-Id: Ie157ab7f667dbdc313b7fdbfc1df71874e8bd0fc
fcd02797ee