Add Info message for delivery client

Promote Debug message to Info message when peer starts
delivery client on a channel. This will help administrators
know which peer in an organization is communicating with
orderer, and troubleshoot block dissemination issues,
without requiring debug to be enabled.

Change-Id: I01fb12773ed2768a025267cf1008002fb3fe83dc
Signed-off-by: David Enyeart <enyeart@us.ibm.com>

core/deliverservice/deliveryclient.go

@@ -225,7 +225,7 @@ func (d *deliverServiceImpl) StartDeliverForChannel(chainID string, ledgerInfo b
 		return errors.New(errMsg)
 	} else {
 		client := d.newClient(chainID, ledgerInfo)
-		logger.Debug("This peer will pass blocks from orderer service to other peers for channel", chainID)
+		logger.Info("This peer will retrieve blocks from ordering service and disseminate to other peers in the organization for channel", chainID)
 		d.deliverClients[chainID] = &deliverClient{
 			bp:      blocksprovider.NewBlocksProvider(chainID, client, d.conf.Gossip, d.conf.CryptoSvc),
 			bclient: client,

core/deliverservice/requester.go

@@ -42,12 +42,12 @@ func (b *blocksRequester) RequestBlocks(ledgerInfoProvider blocksprovider.Ledger
 	}
 
 	if height > 0 {
-		logger.Debugf("Starting deliver with block [%d] for channel %s", height, b.chainID)
+		logger.Infof("Starting deliver with block [%d] for channel %s", height, b.chainID)
 		if err := b.seekLatestFromCommitter(height); err != nil {
 			return err
 		}
 	} else {
-		logger.Debugf("Starting deliver with oldest block for channel %s", b.chainID)
+		logger.Infof("Starting deliver with oldest block for channel %s", b.chainID)
 		if err := b.seekOldest(); err != nil {
 			return err
 		}

gossip/state/state.go

@@ -271,8 +271,8 @@ func NewGossipStateProvider(chainID string, services *ServicesMediator, ledger l
 		stateMetrics: stateMetrics,
 	}
 
-	logger.Infof("Updating metadata information, "+
-		"current ledger sequence is at = %d, next expected block is = %d", height-1, s.payloads.Next())
+	logger.Infof("Updating metadata information for channel %s, "+
+		"current ledger sequence is at = %d, next expected block is = %d", chainID, height-1, s.payloads.Next())
 	logger.Debug("Updating gossip ledger height to", height)
 	services.UpdateLedgerHeight(height, common2.ChainID(s.chainID))