refs #100673 Add repository dtd and xsd to the docs build.
refs #100673 Add repository dtd and xsd to the docs build.

svartika/ccnx,svartika/ccnx,cawka/ndnx,svartika/ccnx,ebollens/ccnmp,svartika/ccnx,svartika/ccnx,cawka/ndnx,cawka/ndnx,svartika/ccnx,svartika/ccnx,ebollens/ccnmp,ebollens/ccnmp,ebollens/ccnmp,cawka/ndnx,cawka/ndnx