Update cluster-applications to v0.8.0

Merged João Alexandre Cunha requested to merge jcunha-update-managed-apps-template into master

What does this MR do?

#35670 (closed)

#35672 (closed)

This upgrade brings in a few changes as per the release page. Most important of these is that it introduces Prometheus and ElasticStack.

Screenshots

Does this MR meet the acceptance criteria?

Conformity

Availability and Testing

Security

If this MR contains changes to processing or storing of credentials or tokens, authorization and authentication methods and other items described in the security review guidelines:

  • Label as security and @ mention @gitlab-com/gl-security/appsec
  • The MR includes necessary changes to maintain consistency between UI, API, email, or other methods
  • Security reports checked/validated by a reviewer from the AppSec team
Edited by Thong Kuah