Address warnings for unhandled query status msgs.
Address warnings for unhandled query status msgs.

The exporter used to emit warnings about unhandled query status messages. This
was not a correctness issue, but still confusing. We now added handlers for
these message types.

pmos69/vast,pmos69/vast,vast-io/vast,vast-io/vast,vast-io/vast,vast-io/vast,mavam/vast,mavam/vast,pmos69/vast,pmos69/vast,mavam/vast,vast-io/vast,mavam/vast