Instead of injecting it into varios places inside the code.

When the osiris log is closed it will decrement the global "readers"
counter which is why it is much safer to do this in terminate.

Handle closed connections in stream reader

when the client forcefully terminates TCP connection

Also improve logging.

Use Ranch 2.1.0 in bazel build

Proposed `min-masters` implementation relies on metrics so they need to
be collected during queue_master_location tests.

Matches 063d32626d110fedaef1f0ff8f09187a99fa967e

Revisit two rabbitmq.conf validators