The import string for voltha-lib-go library needs to change from v5
to v6 after a major version upgrade of the voltha-lib-go library.

Change-Id: If443376b150e0f4bb49f50cb2c8cf8c132b7244b
diff --git a/pkg/ponresourcemanager/ponresourcemanager.go b/pkg/ponresourcemanager/ponresourcemanager.go
index 35b67a7..3970711 100755
--- a/pkg/ponresourcemanager/ponresourcemanager.go
+++ b/pkg/ponresourcemanager/ponresourcemanager.go
@@ -25,9 +25,9 @@
 	"time"
 
 	bitmap "github.com/boljen/go-bitmap"
-	"github.com/opencord/voltha-lib-go/v5/pkg/db"
-	"github.com/opencord/voltha-lib-go/v5/pkg/db/kvstore"
-	"github.com/opencord/voltha-lib-go/v5/pkg/log"
+	"github.com/opencord/voltha-lib-go/v6/pkg/db"
+	"github.com/opencord/voltha-lib-go/v6/pkg/db/kvstore"
+	"github.com/opencord/voltha-lib-go/v6/pkg/log"
 )
 
 const (