Enabled metrics annotations via tenant.metrics.enabled
Uses annotations to make use of Istio metrics merging (so that minio metrics are available via 15020 (sidecar metrics port)
Disables the operator provided scrape config in favor of using the istio podmonitor to grab these metrics
Metrics are now scraped by the monitoring-monitoring-kube-istio-envoy scrape job instead of minio-minio-minio-instance-minio-job. This means that dashboard users need to select a different job in the dropdown to see this information.
