SetReadDeadline on connections to tsdb-gw. fixes #53
SetReadDeadline on connections to tsdb-gw. fixes #53

because we never try and write to connections, if we dont set a
readDeadline we will never notice that a connection is dead and
so the connection will never be closed.

raintank/tsdb-gw,raintank/tsdb-gw,raintank/tsdb-gw