Update Cluster Auditor Architecture Doc

https://repo1.dso.mil/platform-one/big-bang/bigbang/-/blob/master/charter/packages/cluster-auditor/Architecture.md

This no longer reflects the architecture of cluster auditor. We should update to reflect the new status (viewing violations via Grafana, etc).

added clusterAuditor teamcore/security labels

set weight to 1

changed milestone to %1.27.0

changed iteration to Big Bang Iterations Jan 25, 2022 - Feb 7, 2022

mentioned in merge request !1238 (merged)

assigned to @ronwebb

added statusdoing label

mentioned in merge request !1300 (merged)

removed statusdoing label

added statusreview label

closed with merge request !1300 (merged)

mentioned in commit 28b2b04d

removed statusreview label