fix: add pulsar config volume mount in scheduler

[JiangtianLi]

Pull Request Template

Description

Please include a summary of the changes and the related issue (if any). Describe your changes in detail to help reviewers understand your contribution.

• What is the purpose of this PR?

This PR fixes the issue where the scheduler installed by the operator misses the Pulsar config in order to authenticate to Pulsar.

• What was changed?

This PR adds the Pulsar volume and volume mount to the scheduler deployment in the scheduler controller.

• Why was it changed?

The change is because of the missing Pulsar config in the scheduler deployment, when Pulsar config is specified in Application config.

• Does this address any existing issues or enhancement requests?

This PR addresses an existing issue.

Fixes # (issue)

Type of change

Please select the type of change your PR introduces:

• Bugfix
• Feature
• Code Style Update (formatting, renaming)
• Refactor (code changes that do not fix a bug or add a feature)
• Documentation Update
• Other (please describe):

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions to reproduce these tests. List any relevant details for your test configuration.

• Test Configuration:

  • Kubernetes Version: v1.28.3
  • Helm Version: v3.15.1
  • OS: Ubuntu 22.04

• Test Steps:

  1. make test-unit
  2. make test-integration
  3. install armada-operator and armada in a Kubernetes cluster, and the scheduler is able to authenticate to Pulsar.

Checklist:

• My code follows the style guidelines of this project.
• I have performed a self-review of my code.
• I have commented on my code, particularly in hard-to-understand areas.
• I have made corresponding changes to the documentation.
• My changes generate no new warnings.
• I have added tests that prove my fix is effective or that my feature works.
• New and existing unit tests pass locally with my changes.
• Any dependent changes have been merged and published in downstream modules.