VOL-2274 Use openonu-adapter that supports readiness probes

Change-Id: I448651c2b37b14a0b550a2abd529d84465c2b5ef
diff --git a/voltha-adapter-openonu/Chart.yaml b/voltha-adapter-openonu/Chart.yaml
index b9a7eb7..ec7f80c 100644
--- a/voltha-adapter-openonu/Chart.yaml
+++ b/voltha-adapter-openonu/Chart.yaml
@@ -17,5 +17,5 @@
 description: A Helm chart for Voltha OpenONU Adapter
 icon: https://guide.opencord.org/logos/cord.svg
 
-version: 2.1.7
-appVersion: 2.2.2
+version: 2.1.8
+appVersion: 2.2.3