[LIZK-4038] [Backup-Change] Consolidate all backup change/configurati…

[adityaagg09]

…on into a single commit for future upgrade integration

Description

(Write a concise description including what, why, how)
This PR consolidates all Backup-Change related changes into a single commit to simplify future upgrades and version rollouts. The goal is to make it easier for subsequent developers to collect, review, and reapply Backup-Change configurations in upcoming releases.

All the commit the backup-config tag are present inside this pr :- https://docs.google.com/spreadsheets/d/1B8G3-VmnqolrxBeNAI2XptkVvy9-Y8D7B0TnYWp5zXg/edit?gid=85047633#gid=85047633

Tests

The following tests are written for this issue:
(List the names of added unit/integration tests)

The following validation was performed:

1. Ran the command mvn clean package -DskipTests
[INFO] Reactor Summary for Apache ZooKeeper 3.8.4: [INFO] [INFO] Apache ZooKeeper ................................... SUCCESS [ 1.442 s] [INFO] Apache ZooKeeper - Documentation ................... SUCCESS [ 0.393 s] [INFO] Apache ZooKeeper - Jute ............................ SUCCESS [ 4.017 s] [INFO] Apache ZooKeeper - Server .......................... SUCCESS [ 8.396 s] [INFO] Apache ZooKeeper - Metrics Providers ............... SUCCESS [ 0.117 s] [INFO] Apache ZooKeeper - Prometheus.io Metrics Provider .. SUCCESS [ 1.072 s] [INFO] Apache ZooKeeper - Client .......................... SUCCESS [ 0.102 s] [INFO] Apache ZooKeeper - Recipes ......................... SUCCESS [ 0.243 s] [INFO] Apache ZooKeeper - Recipes - Election .............. SUCCESS [ 0.325 s] [INFO] Apache ZooKeeper - Recipes - Lock .................. SUCCESS [ 0.316 s] [INFO] Apache ZooKeeper - Recipes - Queue ................. SUCCESS [ 0.297 s] [INFO] Apache ZooKeeper - Assembly ........................ SUCCESS [ 1.366 s] [INFO] Apache ZooKeeper - Compatibility Tests ............. SUCCESS [ 0.099 s] [INFO] Apache ZooKeeper - Compatibility Tests - Curator ... SUCCESS [ 0.305 s] [INFO] ------------------------------------------------------------------------ [INFO] BUILD SUCCESS [INFO] ------------------------------------------------------------------------ [INFO] Total time: 18.567 s [INFO] Finished at: 2025-10-14T14:20:43+05:30 [INFO] ------------------------------------------------------------------------

2. Tried to setup the local zookeeper server it was able to establish the quorum

The following is the result of the "mvn test" command on the appropriate module:
(If CI test fails due to known issue, please specify the issue and test PR locally. Then copy & paste the result of "mvn test" to here.)

Changes that Break Backward Compatibility (Optional)

My PR contains changes that break backward compatibility or previous assumptions for certain methods or API. They include:
(Consider including all behavior changes for public methods or API. Also include these changes in merge description so that other developers are aware of these changes. This allows them to make relevant code changes in feature branches accounting for the new method/API behavior.)

Documentation (Optional)

In case of new functionality, my PR adds documentation in the following wiki page:
(Link the GitHub wiki you added)