Update : Opentsdb helm chart with zopdev image and separate zookeeper

[arunesh-j]

Description

Updated the OpenTSDB Helm chart with a complete overhaul of the deployment configuration for improved stability and consistency with the ZopDev ecosystem.

Key changes:

• Switched to ZopDev image — replaced the third-party petergrace/opentsdb-docker image with zopdev/opentsdb:v0.0.1
• Bundled ZopDev Zookeeper — removed dependency on any external Zookeeper setup; the ZopDev Zookeeper chart (v0.0.2) is now included as a Helm dependency, providing a stable and managed Zookeeper instance alongside OpenTSDB
• Added HBase configuration — introduced opentsdb.conf and hbase-site.xml via a ConfigMap, with Zookeeper quorum automatically resolved from the release name
• Added headless service — required for StatefulSet stable pod DNS identity and internal HBase/Zookeeper coordination
• Added connection ConfigMap — exposes OPENTSDB_HOST and OPENTSDB_PORT for service chart integration via envFrom.configmaps

Type of Change

• Chart configuration update

Checklist

• helm lint passes without errors
• Deployment tested — write and read verified against live OpenTSDB instance