This commit sets the following field to false:
`<serviceMonitor|podMonitor|rule>SelectorNilUsesHelmValues: true`
As a result, we look for all CRs with any labels in all namespaces rather than just
the ones tagged with `release: rancher-monitoring`.
- Moves `monitoringRole` settings into `global.rbac` in values.yaml
- Moves user ClusterRoles into one file: `rancher-monitoring/clusterroles.yaml`
- Reformats user ClusterRoles format to look like upstream format
- Enables aggregateRolesForRBAC by default
- Updates README.md and CHANGELOG.md for relevant ClusterRole changes
Removes the code that supports the Helm 2 hack for crd/ (`prometheus-operator/cleanup-crds.yaml` and
`prometheus-operator/crds.yaml`) and removes crd-install hooks from crds.
Also updates the README.md and CHANGELOG.md accordingly.
Arvind Iyengar
Denise Schannon