daemon: add missing RR type definitions

Some RR type definitions present in IANA DNS parameters registry were
missing in kresd. This commit synchronizes the tables with IANA registry
as of 2017-12-08 13:20 UTC.

At the same time, this commit is
fixup! converted constant tables, support kres.type.TYPE1234
The mentioned commit accidentally removed NULL definition which broke TA
signaling module.