Allows tracing begin (not just completion) of read, write
and query_dir which may be helpful in finding slow requests
and other timing information
Signed-off-by: NSteve French <stfrench@microsoft.com>
Reviewed-by: NPavel Shilovsky <pshilov@microsoft.com>
Reviewed-by: NRonnie Sahlberg <lsahlber@redhat.com>