[VOL-3536] Error and loggin enhancements.
- Removing VERBOSE level and moving to just debug
- adding deviceId where missing for achieve bettere debugging
- add other parameters to returned errors

Change-Id: I6cb2301bba90a294726f87e94d4352b43f00f912
diff --git a/internal/pkg/onuadaptercore/onu_uni_port.go b/internal/pkg/onuadaptercore/onu_uni_port.go
index 0406cc9..8bc029d 100644
--- a/internal/pkg/onuadaptercore/onu_uni_port.go
+++ b/internal/pkg/onuadaptercore/onu_uni_port.go
@@ -19,7 +19,6 @@
 
 import (
 	"context"
-	"errors"
 	"fmt"
 	"strconv"
 	"strings"
@@ -143,7 +142,7 @@
 	} else {
 		logger.Warnw("could not create Voltha UniPort", log.Fields{
 			"device-id": apDeviceHandler.device.Id, "PortNo": oo.portNo})
-		return errors.New("create Voltha UniPort failed")
+		return fmt.Errorf("create Voltha UniPort %d failed on %s", oo.portNo, apDeviceHandler.device.Id)
 	}
 	return nil
 }