The wallet password is defined as `bytes` in the rpc.proto spec and we are
passing it as a string, resulting in an incorrect password being set on a
new wallet and an inability to unlock an existing wallet.
Convert the wallet password to a Buffer before passing to `initWallet` and
`unlockWallet`, which is the default data type used to represent bytes in
the node grpc client. This is sures that the password is passed correctly
to lnd.
Fix#400
Use grpc.credentials.combineChannelCredentials to combine the ssl
credentials with the macaroons when initializing the lnd rcp client.
This avoids the need to pass the macaroon metadata throughout the
codebase.
Ben Woosley
Tom Kirkpatrick
Jack Mallers
João Almeida
João Almeida