Add volumemounts to cinder-backup container

Adding volumemounts to allow cinder to access /var/lib/cinder/tmp

Change-Id: I1e93587da2b4889118f2b941c89e7d3adee2b7c8

cinder/templates/deployment-backup.yaml

@@ -140,6 +140,8 @@ spec:
           volumeMounts:
             - name: pod-tmp
               mountPath: /tmp
+            - name: cinder-tmp
+              mountPath: /var/lib/cinder/tmp
             - name: cinder-bin
               mountPath: /tmp/cinder-backup.sh
               subPath: cinder-backup.sh
@@ -212,6 +214,8 @@ spec:
       volumes:
         - name: pod-tmp
           emptyDir: {}
+        - name: cinder-tmp
+          emptyDir: {}
         - name: cinder-etc
           secret:
             secretName: cinder-etc