VOL-2341 Chart for voltha-kafka-dump tool

Change-Id: I558b92fd70d4f2a3a7dc8d5d1f37bbcfd6fb43c5
diff --git a/tools/voltha-kafka-dump/templates/NOTES.txt b/tools/voltha-kafka-dump/templates/NOTES.txt
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+Thank you for installing {{ .Chart.Name }}.
+
+To dump events in human-readable format:
+
+kubectl exec -it <pod-name> ./voltha-dump-events.sh
+
+To dump events in binary format:
+
+kubectl exec -it <pod-name> ./voltha-dump-events.sh -- --binary