Add NETCONF notification for ONU activation and Kafka client to receive events, update dependencies

Change-Id: I5f768fa8077ef7c64e00a534744ca47492344935
diff --git a/vendor/github.com/jcmturner/gokrb5/v8/iana/constants.go b/vendor/github.com/jcmturner/gokrb5/v8/iana/constants.go
new file mode 100644
index 0000000..0b8e916
--- /dev/null
+++ b/vendor/github.com/jcmturner/gokrb5/v8/iana/constants.go
@@ -0,0 +1,5 @@
+// Package iana provides Kerberos 5 assigned numbers.
+package iana
+
+// PVNO is the Protocol Version Number.
+const PVNO = 5