config: make sure network dir is created
config: make sure network dir is created

The wallet and macaroon databases are the first files that are created
for a new node. When initializing those databases, the parent directory
is created if it does not exist.
With both of the databases now potentially being remote, that code that
creates the parent directory might never be executed and we need to do
that manually when parsing the configuration.
Otherwise we run into an error when we later try to create our default
macaroons in that folder and it doesn't exist.

aakselrod/lnd,aakselrod/lnd