slpdb incorrectly index slp address on regtest

[SuperCipher]

When I use slpdb with regtest node the address that get index into mongodb is still a slptest.

possible patch implementation https://github.com/ActorForth/SLPDB-src/commit/e79f0eeada9860fcedd088c2860c93b1540b3994 https://github.com/ActorForth/SLPDB-src/commit/805a03e532ab658374a18a195dd97b5b26041aa6

If you are ok with it I can create a pull request.