The netcat package is a transitional package on focal and jammy and
ultimately installs netcat-openbsd on those platforms. On Noble the
transitional package is gone and we need to install either
netcat-openbsd or netcat-traditional. Choose netcat-openbsd since that
seems to be what we get by default on the older platforms in order to
support deploying on Noble as well as Focal/Jammy.
This is particularly useful for the updated zookeeper server
deployments.
Change-Id: I188acace3284b1f79cc0be9f20e4067cc924f5c2