Value Statement

Currently when Global Hub is used, we intentionally disable MCO on the managed Hubs.

Users of Global Hub (Citi, Amex) would like to be able to observe Managed Hubs centrally in a Global Hub to view health/addon statuses. Currently Hubs run the EndpointMetrics (Observability Addon) in a custom namespace as a non-addon, but there are some shared artifacts which may clash (secrests/CMO alertmanager config). 

The aim of this spike is to enable observability on Global Hub and test what breaks. 

Definition of Done for Engineering Story Owner (Checklist)

• We have a Global Hub test environment with MCO enabled
• We are able to view metrics/alerts from spoke managed hubs only (no spoke managed clusters) 
• Any issues that block this are documented on the parent epic

Development Complete

• The code is complete.
• Functionality is working.
• Any required downstream Docker file changes are made.

Tests Automated

• [ ] Unit/function tests have been automated and incorporated into the
  build.
• [ ] 100% automated unit/function test coverage for new or changed APIs.

Secure Design

• [ ] Security has been assessed and incorporated into your threat model.

Multidisciplinary Teams Readiness

• [ ] Create an informative documentation issue using the [Customer
  Portal_doc_issue template](
  https://github.com/stolostron/backlog/issues/new?assignees=&labels=squad%3Adoc&template=doc_issue.md&title=),
  and ensure doc acceptance criteria is met. Link the development issue to
  the doc issue.
• [ ] Provide input to the QE team, and ensure QE acceptance criteria
  (established between story owner and QE focal) are met.

Support Readiness

• [ ] The must-gather script has been updated.