I've encountered several upgrade errors at customers or redhatters when
DHCP and/or DNS configuration simply disappears after Satellite upgrade.

When our users add or modify subnets or domains, our installer overwrite
the configuration with the initial one. Since our installer is limited 
and only supports definition of one subnet/domain, all the others are 
deleted and users need to restore those configurations from backups.

Purpose of this BZ:

Big warning comments in both /etc/zones.conf and /etc/dhcp/dhcpd.conf
files telling users that upgrade process will rewrite these files. I 
think we already do this upstream. Unfortunately our upstream warning is 
too short IMHO:

### File managed with puppet ###

I think we need to add extra information there for Satellite. In upstream, upgrade process never calls installer again, therefore this short notice is sufficient.