peer: Test that witnessEnabled is set properly on peer connection.
peer: Test that witnessEnabled is set properly on peer connection.

davecgh/btcd,wallclockbuilder/btcd,Roasbeef/btcd,Roasbeef/btcd,btcsuite/btcd,tb00/btcd,dajohi/btcd,aakselrod/btcd,ltcsuite/ltcd,ltcsuite/ltcd,Stash-Crypto/btcd,ppcsuite/ppcd,ppcsuite/ppcd,btcsuite/btcd,aakselrod/btcd,dajohi/btcd,Stash-Crypto/btcd,wallclockbuilder/btcd,dajohi/btcd,tb00/btcd,davecgh/btcd