fix: update clusterrole template to be compatible with openshift

[chlins]

Signed-off-by: chlins chenyuzh@vmware.com

Fixes #98

Changes proposed on the PR:

• add persistentvolumeclaims/finalizers to role resources
• manifest yaml under examples folder was out of date, sync with charts

[cndoit18]

LGTM

[maleka12]

Hi,
we have installed redis-operator on Openshift v4.8.35 and still facing problems with error:
FailedCreate statefulset/rfr-redisfailover create Pod rfr-redisfailover-0 in StatefulSet rfr-redisfailover failed error: failed to create PVC pvcc-rfr-redisfailover-0: persistentvolumeclaims "pvcc-rfr-redisfailover-0" is forbidden: cannot set blockOwnerDeletion if an ownerReference refers to a resource you can't set finalizers on: ,

Our clusterrole looks like:

kind: ClusterRole
metadata:
  name: redisoperator
rules:
- apiGroups:
  - databases.spotahome.com
  resources:
  - redisfailovers
  - redisfailovers/finalizers
  - persistentvolumeclaims
  - persistentvolumeclaims/finalizers
  - statefulsets/finalizers
  verbs:
  - '*'
- apiGroups:
  - apiextensions.k8s.io
  resources:
  - customresourcedefinitions
  verbs:
  - '*'
- apiGroups:
  - ""
  resources:
  - pods
  - services
  - endpoints
  - events
  - configmaps
  - secrets
  - persistentvolumeclaims
  - persistentvolumeclaims/finalizers
  verbs:
  - '*'
- apiGroups:
  - apps
  resources:
  - deployments
  - statefulsets
  verbs:
  - '*'
- apiGroups:
  - policy
  resources:
  - poddisruptionbudgets
  verbs:
  - '*'

Is there anyone who have installed redis-operator on openshift 4.8 and it works correctly with storage?
Maybe this occurs only on our openshift cluster.