The duplication of settings makes it very hard to spot mistakes. This is
a new version of the config file that uses nesting and cartesian
products of variants to avoid duplication.

To make it easier to test wheter the changes are working, this generates
exactly the same dictionaries as the original config, in exactly the
same sequence, including all the bugs. Look for the #FIXME comments for
places that will be cleaned up or fixed later.
Signed-off-by: NEduardo Habkost <ehabkost@redhat.com>