Right now, one must file bug reports against specific RedHat RPMs. There appears to be no way to file a bug report (or an enhancement request) against the generic process of installing, upgrading, etc, a RedHat system. It would be nice if there were suitable entries added to the 'component' list in Bugzilla for these processes, so people could file bug reports against them. Possibly other generic entries should also exist, say for reporting problems with the bootdisks or the like.
AFAIK, everything you mentioned would fall under the general category of "install" -- that should cover new installs, upgrades, etc.