[COMMON] Update common Elasticsearch chart to use version 7.9.3

Fixes issue with pods IPs configuration when there are more than one IP address.
Elastic Search 7.9.3 was recommended by SDNR team, and is proven to properly deal with DS networking.

Issue-ID: SDNC-895
Signed-off-by: Grzegorz Lis <grzegorz.lis@nokia.com>
Change-Id: I89e01b85782c042d259e34774a56d6ff9eb7c8fb
diff --git a/kubernetes/common/elasticsearch/values.yaml b/kubernetes/common/elasticsearch/values.yaml
index 7fb097b..7722af9 100644
--- a/kubernetes/common/elasticsearch/values.yaml
+++ b/kubernetes/common/elasticsearch/values.yaml
@@ -1,4 +1,5 @@
-# Copyright © 2020 Bitnami, AT&T, Amdocs, Bell Canada, highstreet technologies
+# Copyright (c) 2020 Bitnami, AT&T, Amdocs, Bell Canada, highstreet technologies
+# Modification Copyright (c) 2020 Nokia
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -40,7 +41,7 @@
   enabled: true
 
 # application image
-image: bitnami/elasticsearch:7.6.1
+image: bitnami/elasticsearch:7.9.3
 ## Specify a imagePullPolicy
 ## Defaults to 'Always' if image tag is 'latest', else set to 'IfNotPresent'
 ## ref: http://kubernetes.io/docs/user-guide/images/#pre-pulling-images