[VOL-5492] populate missing feilds in pon and nni Periodic stats

Change-Id: Iec58373e6e65784708fc0397f6912aab64e102b4
Signed-off-by: Akash Reddy Kankanala <akash.kankanala@radisys.com>
diff --git a/internal/pkg/core/device_handler.go b/internal/pkg/core/device_handler.go
index 2664391..a72c011 100755
--- a/internal/pkg/core/device_handler.go
+++ b/internal/pkg/core/device_handler.go
@@ -177,12 +177,19 @@
 var pmNames = []string{
 	"rx_bytes",
 	"rx_packets",
+	"rx_ucast_packets",
 	"rx_mcast_packets",
 	"rx_bcast_packets",
+	"rx_error_packets",
+	"rx_crc_errors",
+	"rx_packets_dropped",
 	"tx_bytes",
 	"tx_packets",
+	"tx_ucast_packets",
 	"tx_mcast_packets",
 	"tx_bcast_packets",
+	"tx_error_packets",
+	"tx_dropped_total",
 }
 
 // NewOnuDevice creates a new Onu Device