Cinder: Bring backup service inline with others for entrypoints

This PS brings the launch style of Cinder-Backup inline with other
OpenStack-Helm pods.

Change-Id: I6a1889037c1b57d370ea00d1044942164fffe5fc

cinder/templates/bin/_cinder-backup.sh.tpl

@@ -0,0 +1,19 @@
+#!/bin/bash
+
+# Copyright 2017 The Openstack-Helm Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+set -ex
+exec cinder-backup \
+     --config-file /etc/cinder/cinder.conf

cinder/templates/configmap-bin.yaml

@@ -31,6 +31,8 @@ data:
 {{- include "helm-toolkit.scripts.keystone_user" . | indent 4 }}
   cinder-api.sh: |
 {{ tuple "bin/_cinder-api.sh.tpl" . | include "helm-toolkit.utils.template" | indent 4 }}
+  cinder-backup.sh: |
+{{ tuple "bin/_cinder-backup.sh.tpl" . | include "helm-toolkit.utils.template" | indent 4 }}
   cinder-scheduler.sh: |
 {{ tuple "bin/_cinder-scheduler.sh.tpl" . | include "helm-toolkit.utils.template" | indent 4 }}
   cinder-volume.sh: |

cinder/templates/deployment-backup.yaml

@@ -73,14 +73,16 @@ spec:
               cpu: {{ .Values.resources.cinder_backup.limits.cpu | quote }}
           {{- end }}
           command:
-          - cinder-backup
-          - --config-dir
-          - /etc/cinder/conf
+            - /tmp/cinder-backup.sh
           volumeMounts:
             - name: pod-var-cache-cinder
               mountPath: /var/cache/cinder
+            - name: cinder-bin
+              mountPath: /tmp/cinder-backup.sh
+              subPath: cinder-backup.sh
+              readOnly: true
             - name: cinder-etc
-              mountPath: /etc/cinder/conf/cinder.conf
+              mountPath: /etc/cinder/cinder.conf
               subPath: cinder.conf
               readOnly: true
             {{- if eq .Values.conf.cinder.default.cinder.backup_driver "cinder.backup.drivers.ceph" }}