kube-prometheus: make all RBAC manifests v1beta1

manifests/exporters/kube-state-metrics-cluster-role-binding.yaml

-apiVersion: rbac.authorization.k8s.io/v1alpha1
+apiVersion: rbac.authorization.k8s.io/v1beta1
 kind: ClusterRoleBinding
 metadata:
   name: kube-state-metrics

manifests/exporters/kube-state-metrics-cluster-role.yaml

-apiVersion: rbac.authorization.k8s.io/v1alpha1
+apiVersion: rbac.authorization.k8s.io/v1beta1
 kind: ClusterRole
 metadata:
   name: kube-state-metrics

manifests/prometheus-operator/prometheus-operator-cluster-role-binding.yaml

-apiVersion: rbac.authorization.k8s.io/v1alpha1
+apiVersion: rbac.authorization.k8s.io/v1beta1
 kind: ClusterRoleBinding
 metadata:
   name: prometheus-operator

manifests/prometheus-operator/prometheus-operator-cluster-role.yaml

-apiVersion: rbac.authorization.k8s.io/v1alpha1
+apiVersion: rbac.authorization.k8s.io/v1beta1
 kind: ClusterRole
 metadata:
   name: prometheus-operator

manifests/prometheus/prometheus-cluster-role-binding.yaml

-apiVersion: rbac.authorization.k8s.io/v1alpha1
+apiVersion: rbac.authorization.k8s.io/v1beta1
 kind: ClusterRoleBinding
 metadata:
   name: prometheus

manifests/prometheus/prometheus-cluster-role.yaml

-apiVersion: rbac.authorization.k8s.io/v1alpha1
+apiVersion: rbac.authorization.k8s.io/v1beta1
 kind: ClusterRole
 metadata:
   name: prometheus