[VOL-2694] Use package specific logger instance in all log statements

Change-Id: Icf1cb5ade42e42179aed7731b767af2f52481e3d
diff --git a/rw_core/core/common_test.go b/rw_core/core/common_test.go
index 8375f70..f2cf3da 100644
--- a/rw_core/core/common_test.go
+++ b/rw_core/core/common_test.go
@@ -39,7 +39,6 @@
 )
 
 const (
-	logLevel              = log.FatalLevel
 	volthaSerialNumberKey = "voltha_serial_number"
 	retryInterval         = 50 * time.Millisecond
 )
@@ -60,13 +59,6 @@
 type isConditionSatisfied func() bool
 
 func init() {
-	_, err := log.AddPackage(log.JSON, logLevel, log.Fields{"instanceId": "coreTests"})
-	if err != nil {
-		panic(err)
-	}
-	// Update all loggers to log level specified as input parameter
-	log.SetAllLogLevel(log.ErrorLevel)
-
 	//Default mode is two rw-core running in a pair of competing cores
 	coreInCompeteMode = true
 }
@@ -117,7 +109,7 @@
 		txnPrefix,
 		client,
 		cf.KVStoreTimeout); err != nil {
-		log.Fatal("creating-transaction-context-failed")
+		logger.Fatal("creating-transaction-context-failed")
 	}
 	return client
 }
@@ -136,16 +128,16 @@
 	case OnuAdapter:
 		adapter = cm.NewONUAdapter(adapterCoreProxy)
 	default:
-		log.Fatalf("invalid-adapter-type-%d", adapterType)
+		logger.Fatalf("invalid-adapter-type-%d", adapterType)
 	}
 	adapterReqHandler = com.NewRequestHandlerProxy(coreInstanceID, adapter, adapterCoreProxy)
 
 	if err = adapterKafkaICProxy.Start(); err != nil {
-		log.Errorw("Failure-starting-adapter-intercontainerProxy", log.Fields{"error": err})
+		logger.Errorw("Failure-starting-adapter-intercontainerProxy", log.Fields{"error": err})
 		return nil, err
 	}
 	if err = adapterKafkaICProxy.SubscribeWithRequestHandlerInterface(kafka.Topic{Name: adapterName}, adapterReqHandler); err != nil {
-		log.Errorw("Failure-to-subscribe-onu-request-handler", log.Fields{"error": err})
+		logger.Errorw("Failure-to-subscribe-onu-request-handler", log.Fields{"error": err})
 		return nil, err
 	}
 	return adapter, nil