[SDNC] Fix sdnrdb discovery issue

correct value for ELASTICSEARCH_CLUSTER_NAME

Issue-ID: OOM-2685
Signed-off-by: demskeq8 <alexander.dehn@highstreet-technologies.com>
Change-Id: I1cc1d95a5ed26b6b761ef9f416527f1027087349
diff --git a/kubernetes/sdnc/values.yaml b/kubernetes/sdnc/values.yaml
index 5a4d204..802722f 100644
--- a/kubernetes/sdnc/values.yaml
+++ b/kubernetes/sdnc/values.yaml
@@ -386,7 +386,7 @@
     # handles master and data node functionality
     dedicatednode: "no"
     nameOverride: *elasticSearchName
-    cluster_name: *elasticSearchName
+    cluster_name: sdnrdb-cluster
 # enable
 sdnc-web:
   enabled: true