To make sure we can use the latest version of pool in LiT, we need to
make sure pool compiles against the actual v0.11.1 branch of lnd. There
were some conflicting changes to the macaroon service that didn't make
it to the branch that we need to roll back. Those changes don't affect
pool at all as we were always using the default root key ID anyway.
We update to the latest lnd version that contains the new flag in
AbandonChannel that we need. Because master is now tagged with
v0.x.99-beta, we can already increase the required version in the
server.
Because we touch this file anyway, let's as well avoid a bug in
lndclient that requires a subserver macaroon to be present even if we
don't need that subserver's functionality.
In the future we might want to have the possibility to add additional
fields to a database object (like orders or accounts) without the need
for a migration. We add the code for that already, even if it's not
being used currently.
