[CLOUDP-350669] Publish helm chart to OCI registry for dev/staging workflows

[viveksinghggits]

Summary

In an effort to start using OCI compatible container registries as our helm chart repos, this PR makes the change package and publish our helm chart to ECR registry. A new task publish_helm_chart is introduced in the build variant init_test_run which packages and publishes the chart.

The details about the versioning of the chart can be found in the document here.

Proof of Work

patch and staging evg runs. Notice at the end of the log that dev workflow is pushing to diff repository and staging to different.

Successful run of init_test_run variant in this PR would also work.

Checklist

• Have you linked a jira ticket and/or is the ticket in the title?
• Have you checked whether your jira ticket required DOCSP changes?
• Have you added changelog file?
  • use skip-changelog label if not needed
  • refer to Changelog files and Release Notes section in CONTRIBUTING.md for more details

[github-actions]

⚠️ (this preview might not be accurate if the PR is not rebased on current master branch)

MCK 1.5.0 Release Notes

New Features

• Improve automation agent certificate rotation: the agent now restarts automatically when its certificate is renewed, ensuring smooth operation without manual intervention and allowing seamless certificate updates without requiring manual Pod restarts.

Bug Fixes

• MongoDBMultiCluster: fix resource stuck in Pending state if any clusterSpecList item has 0 members. After the fix, a value of 0 members is handled correctly, similarly to how it's done in the MongoDB resource.
• MultiClusterSharded: Blocked removing non-zero member cluster from MongoDB resource. This prevents from scaling down member cluster without current configuration available, which could lead to unexpected issues.