Fix ZooKeeper CI tests: correct service name and use official Docker image

[Copilot]

Problem

The ZooKeeper CI tests were failing with the following error:

Error response from daemon: manifest for bitnami/zookeeper:latest not found: manifest unknown: manifest unknown

Additionally, the test configuration had an incorrect service name referencing "consul" instead of "zookeeper".

Solution

This PR fixes two issues in the .github/workflows/ci.yml file for the test-zookeeper job:

1. Corrected service name: Changed the service name from consul to zookeeper (line 393). This was a copy-paste error from the Consul test configuration.

2. Updated to official Docker image: Changed the image from bitnami/zookeeper to the official zookeeper:3.9 image. The bitnami :latest tag is no longer available on Docker Hub, causing the manifest not found error. Using the official ZooKeeper image with a specific version tag ensures reproducible builds and follows best practices.

3. Removed bitnami-specific configuration: The ALLOW_ANONYMOUS_LOGIN environment variable was removed as it's specific to bitnami images and not needed for the official ZooKeeper image, which runs without authentication by default.

Changes

     services:
-      consul:
-        image: bitnami/zookeeper
+      zookeeper:
+        image: zookeeper:3.9
         ports:
           - 2181:2181
-        env:
-          ALLOW_ANONYMOUS_LOGIN: "yes"

These minimal changes align with the configuration patterns used for other services in the workflow file and should resolve the CI test failures for ZooKeeper.

Fixes #9698

Original prompt

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This section details on the original issue you should resolve

<issue_title>Fix ZooKeeper CI tests</issue_title>
<issue_description>See: https://productionresultssa3.blob.core.windows.net/actions-results/ac7c45fe-a8b6-42ac-be1e-65b796885f15/workflow-job-run-236fa294-af7a-5bbe-8f53-41b01dc3a536/logs/job/job-logs.txt?rsct=text%2Fplain&se=2025-10-01T21%3A57%3A33Z&sig=BmUxiv9Ecmrt79WMY4Rzhx0pRQsCm0RdDrMlshatg0Q%3D&ske=2025-10-02T08%3A19%3A21Z&skoid=ca7593d4-ee42-46cd-af88-8b886a2f84eb&sks=b&skt=2025-10-01T20%3A19%3A21Z&sktid=398a6654-997b-47e9-b12b-9515b896b4de&skv=2025-11-05&sp=r&spr=https&sr=b&st=2025-10-01T21%3A47%3A28Z&sv=2025-11-05

Error response from daemon: manifest for bitnami/zookeeper:latest not found: manifest unknown: manifest unknown
Warning: Docker pull failed with exit code 1, back off 5.498 seconds before retry.

Also note that the stage refers to starting 'consul', but this is for ZooKeeper. Fix that, also.</issue_description>

Comments on the Issue (you are @copilot in this section)

Fixes #9698

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Microsoft Reviewers: Open in CodeFlow

[ReubenBond]

@copilot consider using the official ZooKeeper images: https://hub.docker.com/_/zookeeper

[Copilot]

@copilot consider using the official ZooKeeper images: https://hub.docker.com/_/zookeeper

Updated to use the official ZooKeeper image (zookeeper:3.9) and removed the bitnami-specific environment variable. Changes in f4acafc.