[VOL-2782] Update go.mod of voltha-go,open-olt-adapter,ofagent-go and voltctl to be compatible with latest version of voltha-lig-go

Change-Id: Iafd5ee70ae0f17db141cb5d7fc25380c3482274a
diff --git a/cmd/ofagent/main.go b/cmd/ofagent/main.go
index b2c9631..2949eaa 100644
--- a/cmd/ofagent/main.go
+++ b/cmd/ofagent/main.go
@@ -58,7 +58,7 @@
 	}
 
 	cm := conf.NewConfigManager(client, kvStoreType, kvStoreHost, kvStorePort, kvStoreTimeout)
-	go conf.ProcessLogConfigChange(cm, ctx)
+	go conf.StartLogLevelConfigProcessing(cm, ctx)
 	return client, nil
 }