OCPBUGS-2660: Add logging verbosity to configuring OVN logs

When updating a large number of address_set, logs get flooded with
"Configuring OVN" which cannot be reduced.
Also klog shows up in the profiling data as a source of CPU consumption
of ovnkube-master.

We make it configurable and assign it a verbosity of 5. Default on
OpenShift is 4, however this log is redundant with the
"transacting operations" that is already logged with level 4.

Reported-at: https://issues.redhat.com/browse/OCPBUGS-1643
Signed-off-by: François Rigault <frigo@amadeus.com>
Signed-off-by: Jamo Luhrsen <jluhrsen@redhat.com>

go-controller/pkg/libovsdbops/transact.go

@@ -38,7 +38,7 @@ func TransactAndCheck(c client.Client, ops []ovsdb.Operation) ([]ovsdb.Operation
 		return []ovsdb.OperationResult{{}}, nil
 	}
 
-	klog.Infof("Configuring OVN: %+v", ops)
+	klog.V(5).Infof("Configuring OVN: %+v", ops)
 
 	ctx, cancel := context.WithTimeout(context.TODO(), types.OVSDBTimeout)
 	defer cancel()