fix: Wrong ClusterRole name in caches ClusterRoleBinding (#605)

**Issue:**

```
Failed to watch *v1.Namespace: failed to list *v1.Namespace: namespaces is forbidden: User \"system:serviceaccount:ack:ack-iam\" cannot list resource \"namespaces\" in API group \"\" at the cluster scope: RBAC: clusterrole.rbac.authorization.k8s.io \"ack-iam-iam-chart-namespace-caches\" not found"
```
ClusterRoleBinding can not mount ClusterRole `ack-iam-iam-chart-namespace-caches` because it doesnt exist.


**Description of changes:**

Fix the naming of ClusterRoleBinding and ClusterRole attached to it.

**Fixes issue from PR:** 
#593

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

Author: vladmalynych

templates/helm/templates/caches-role-binding.yaml.tpl

@@ -1,7 +1,7 @@
 apiVersion: rbac.authorization.k8s.io/v1
 kind: ClusterRoleBinding
 metadata:
-  name: {{ IncludeTemplate "app.fullname" }}-namespace-caches
+  name: {{ IncludeTemplate "app.fullname" }}-namespaces-cache
   labels:
     app.kubernetes.io/name: {{ IncludeTemplate "app.name" }}
     app.kubernetes.io/instance: {{ "{{ .Release.Name }}" }}
@@ -12,7 +12,7 @@ metadata:
 roleRef:
   kind: ClusterRole
   apiGroup: rbac.authorization.k8s.io
-  name: {{ IncludeTemplate "app.fullname" }}-namespace-caches
+  name: {{ IncludeTemplate "app.fullname" }}-namespaces-cache
 subjects:
 - kind: ServiceAccount
   name: {{ IncludeTemplate "service-account.name" }}