This uses the UniversalPreferencesWrite function to set the browser
preferences to allow negotiation and ticket forwarding in the IPA domain.
A self-signed certificate is generated to sign the javascript.
1) Add a base class for all of the instance objects.
2) Normalize usage of logging.
3) General cleanups of ipa-server-install.
4) Make better use of httpinstance.
5) Add webguiinstance.
6) Improve progress reporting during installation.
Works Here (TM), but it would be nice to get someone else
to test since this moves code around a bit.
Rob Crittenden
Karl MacMillan