libnet-vampire: add attributes from the replicated schema to the bootstrap schema

libnet-vampire: add attributes from the replicated schema to the bootstrap schema

Replicated schema might have attributes on some basement classes (ie.
top) that are not in the bootstrap schema which rendered the constructed
schema un-usable becaused it lacked some classes that were required by a
lot of others and that were put in the constructed schema because the
dependent class was present in the bootstrap schema (when we translate
drs object into ldb schema object we use a boostrap schema to do the
validation).

The change that is introduced by this patch will put all new attributes
definitions into the bootstrap schema so that foundations classes can be
translated.