resolve a permissions error related to redis

see: https://github.com/ansible/awx/issues/9401

installer/roles/kubernetes/templates/deployment.yml.j2

@@ -362,6 +362,9 @@ spec:
 
             - name: {{ kubernetes_deployment_name }}-redis-socket
               mountPath: "/var/run/redis"
+
+            - name: {{ kubernetes_deployment_name }}-redis-data
+              mountPath: "/data"
           resources:
             requests:
               memory: "{{ redis_mem_request }}Gi"
@@ -472,6 +475,9 @@ spec:
         - name: {{ kubernetes_deployment_name }}-redis-socket
           emptyDir: {}
 
+        - name: {{ kubernetes_deployment_name }}-redis-data
+          emptyDir: {}
+
 ---
 apiVersion: v1
 kind: Service