Fix namecoin-tx test calls.
Fix namecoin-tx test calls.

Replace bitcoin-tx with namecoin-tx for new tests and adapt also the
test argument address to be of Namecoin-type (but with the same pubkey hash).

namecoin/namecore,namecoin/namecoin-core,brandonrobertz/namecoin-core,wiggi/huntercore,brandonrobertz/namecoin-core,namecoin/namecore,namecoin/namecore,namecoin/namecore,pataquets/namecoin-core,namecoin/namecoin-core,domob1812/huntercore,pataquets/namecoin-core,domob1812/namecore,pataquets/namecoin-core,domob1812/namecore,brandonrobertz/namecoin-core,domob1812/huntercore,namecoin/namecoin-core,domob1812/namecore,namecoin/namecoin-core,brandonrobertz/namecoin-core,namecoin/namecoin-core,domob1812/huntercore,domob1812/namecore,namecoin/namecore,namecoin/namecore,wiggi/huntercore,brandonrobertz/namecoin-core,wiggi/huntercore,pataquets/namecoin-core,brandonrobertz/namecoin-core,pataquets/namecoin-core,domob1812/huntercore,wiggi/huntercore,domob1812/huntercore,domob1812/huntercore,wiggi/huntercore,namecoin/namecoin-core,wiggi/huntercore,domob1812/namecore,domob1812/namecore,pataquets/namecoin-core