OPA Exporter Implementation (Part II)

Split from #685 (closed)

Blocks https://repo1.dso.mil/platform-one/big-bang/bigbang/-/issues/814 Related to #685 (closed). Related to https://repo1.dso.mil/platform-one/big-bang/bigbang/-/merge_requests/778 Related to https://repo1.dso.mil/platform-one/big-bang/apps/core/cluster-auditor/-/merge_requests/56 Related to https://repo1.dso.mil/platform-one/big-bang/apps/core/cluster-auditor/-/merge_requests/57 Related to https://repo1.dso.mil/platform-one/big-bang/apps/core/monitoring/-/merge_requests/81 Related to https://repo1.dso.mil/platform-one/big-bang/apps/core/policy/-/merge_requests/109

Implementation of Prometheus/Grafana for monitoring violations of OPA

AC:

• Cluster auditor uses Grafana instead of Kibana for logging violations