(feature) Convert Monitoring to Passthrough

General MR

Summary

passthrough conversion

Umbrella branch

monitoring-301/passthrough-conversion

Relevant logs/screenshots

Linked Issue

issue

Upgrade Notices

All upstream chart value overrides in ./chart/values.yaml will need to be shifted under the upstream key.

For example:

Previous Values:

prometheus:
  image:
    repository: ironbank/opensource/prometheus/prometheus
    pullPolicy: Always
    tag: v3.0.0

Current Values:

upstream:
  prometheus:
    image:
      repository: ironbank/opensource/prometheus/prometheus
      pullPolicy: Always
      tag: v3.0.0

Please note, this change does not apply to Big Bang-added top-level keys, including: istio, networkPolicies, openshift, upgradeCrds.