The local client class handles a network connection to a local service. It
is meant to be used with the tee filter so that the internal cloning of
DCBs can be removed.
The local client class connects to a port on the local host. This requires
that the user connecting to the tee filter has adequate grants to connect
locally to a MaxScale service.
After authentication for the local client is complete, the client will
pipe all queries to the service while ignoring any responses it
generates. This could be expanded so that a special handler would be given
as an argument. The handler would then handle the responses to the
queries.
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