Description of problem:
upgrade from rhns-4.2 to 5.2 fails because install.pl tries to activate the server, this doesn't work because of cert version mismatch. calling rhn-satellite-activate manually afterwards also fails, you have to upgrade the schema to 5.2 first. after this change has been done, activation finally worked. we definitely should add an option for the cert version mismatch problem to the install.pl script, otherwise script will never run successfully when you upgrade between different major-releases.

upgrade docs should be changed as well.

Version-Release number of selected component (if applicable):
rhns-5.2

How reproducible:
install.pl --disconnected 

Steps to Reproduce:
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Actual results:
install.pl fails

Expected results:
install.pl runs successfully

Additional info: