Update cluster applications to 0.34.1

What does this MR do?

This changes repo location for Nginx Ingress, fluentD, and Prometheues to vendored charts as the stable repo is scheduled to be deleted after 2020-11-13.

https://gitlab.com/gitlab-org/cluster-integration/cluster-applications@v0.33.0...v0.34.1

Related issue: #220141 (closed)

Testing

https://staging.gitlab.com/hello-staging/hello-staging-cluster-management/-/jobs/37957313 successfully ran using the image: registry.gitlab.com/gitlab-org/cluster-integration/cluster-applications:v0.34.1

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides
• [-] Database guides
• [-] Separation of EE specific content

Availability and Testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.