Bug #10803: Try apt-get -f install to workaround nuke failure.

Bug #10803: Try apt-get -f install to workaround nuke failure.

Sometimes packages or dpkg gets in a weird state where a nuke will
fail to run and simply running an apt-get -f install on the
machine will fix things up so it can be nuked again. Currently
we only ran that being dependent on dpkg --configure completing
where as I changed it so it will still try apt-get -f install
to potentially require less manual intervention when cleaning up
machines. I kept the original behavior but adding some arguments
to insure it will not prompt you for a yes/no (like apt-get -f
install usually would do).

Signed-off-by: Sandon Van Ness <sandon@redhat.com>