Uses a new subclass IPAOptionParser in scripts instead of OptionParser
from the standard python library. IPAOptionParser uses its own IPAOption
class to store options, which adds a new 'sensitive' attribute.
https://fedorahosted.org/freeipa/ticket/393
Make two krbV imports conditional. These aren't used during a client
install so should cause no problems.
Also fix the client installer to use the new env option in ipautil.run.
We weren't getting the krb5 configuration set in the environment because
we were overriding the environment to set the PATH.
ticket 136
The new framework uses default.conf instead of ipa.conf. This is useful
also because Apache uses a configuration file named ipa.conf.
This wipes out the last vestiges of the old ipa.conf from v1.