fix: Improve Zookeeper initialization wait logic to support multi url configuration store (#671)

* fix: Improve Zookeeper initialization wait logic to support multi url cs

* Update charts/pulsar/templates/pulsar-cluster-initialize.yaml

* fix: Add TLS settings and volume mounts for Zookeeper initialization

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Co-authored-by: Ganesh Kalyan Kommisetti <gkommisetti@paypal.com>

Author: ganeshkalyank

charts/pulsar/templates/pulsar-cluster-initialize.yaml

@@ -70,9 +70,13 @@ spec:
         command: ["timeout", "{{ .Values.pulsar_metadata.waitZookeeperTimeout }}", "sh", "-c"]
         args:
           - |
-            until nslookup {{ .Values.pulsar_metadata.configurationStore}}; do
-              sleep 3;
+            export PULSAR_MEM="-Xmx128M";
+            {{- include "pulsar.toolset.zookeeper.tls.settings" . | nindent 12 }}
+            until timeout 15 bin/pulsar zookeeper-shell -server "{{ template "pulsar.configurationStore.connect" . }}" ls /; do
+              echo "configurationStore {{ template "pulsar.configurationStore.connect" . }} is unreachable... check in 3 seconds ..." && sleep 3;
             done;
+        volumeMounts:
+        {{- include "pulsar.toolset.certs.volumeMounts" . | nindent 8 }}
       {{- end }}
       - name: wait-zk-metastore-ready
         image: "{{ template "pulsar.imageFullName" (dict "image" .Values.pulsar_metadata.image "root" .) }}"