[#326] ir: Make netmap processor to generate audit settlement events

Pass handler of audit settlement event to netmap event processor. Generate
AuditEvent in during new epoch processing.

Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>

pkg/innerring/util.go

@@ -1,6 +1,7 @@
 package innerring
 
 import (
+	"github.com/nspcc-dev/neofs-node/pkg/innerring/processors/settlement/audit"
 	"github.com/nspcc-dev/neofs-node/pkg/innerring/timers"
 )
 
@@ -9,3 +10,11 @@ type blockTimerWrapper timers.BlockTimer
 func (t *blockTimerWrapper) ResetEpochTimer() error {
 	return (*timers.BlockTimer)(t).Reset()
 }
+
+type auditSettlementCalculator audit.Calculator
+
+func (s *auditSettlementCalculator) ProcessAuditSettlements(epoch uint64) {
+	(*audit.Calculator)(s).Calculate(&audit.CalculatePrm{
+		Epoch: epoch,
+	})
+}