[VOL-3228] device-id logging consistancy

Change-Id: Idd00d569d5e8724ab9df03ad5a5744b655ba3448
diff --git a/rw_core/core/device/agent_port.go b/rw_core/core/device/agent_port.go
index 8e68318..eeffd09 100644
--- a/rw_core/core/device/agent_port.go
+++ b/rw_core/core/device/agent_port.go
@@ -116,7 +116,7 @@
 }
 
 func (agent *Agent) deleteAllPorts(ctx context.Context) error {
-	logger.Debugw(ctx, "deleteAllPorts", log.Fields{"deviceId": agent.deviceID})
+	logger.Debugw(ctx, "deleteAllPorts", log.Fields{"device-id": agent.deviceID})
 
 	device, err := agent.getDeviceReadOnly(ctx)
 	if err != nil {
@@ -142,7 +142,7 @@
 }
 
 func (agent *Agent) addPort(ctx context.Context, port *voltha.Port) error {
-	logger.Debugw(ctx, "addPort", log.Fields{"deviceId": agent.deviceID})
+	logger.Debugw(ctx, "addPort", log.Fields{"device-id": agent.deviceID})
 
 	port.AdminState = voltha.AdminState_ENABLED