VOL-1690: Use revision based compaction

Defaults to keeping 10 change revisions in etcd
Also use current 3.4.1 etcd

Change-Id: I458861a61c6a78ee0fc6f9579447eb13e597827a
diff --git a/voltha/Chart.yaml b/voltha/Chart.yaml
index 88e9da4..8c573b5 100644
--- a/voltha/Chart.yaml
+++ b/voltha/Chart.yaml
@@ -17,5 +17,5 @@
 description: A Helm chart for Voltha based on K8S resources in Voltha project
 icon: https://guide.opencord.org/logos/cord.svg
 
-version: 2.1.6
+version: 2.1.7
 appVersion: 2.1.1