fix unit test for new subPathExpr feature (#2638)

* fix unit test for new subPathExpr feature
* add subPathExpr flag to CRD and re-sort

charts/postgres-operator/crds/postgresqls.yaml

@@ -87,10 +87,14 @@ spec:
                     - mountPath
                     - volumeSource
                   properties:
+                    isSubPathExpr:
+                      type: boolean
                     name:
                       type: string
                     mountPath:
                       type: string
+                    subPath:
+                      type: string
                     targetContainers:
                       type: array
                       nullable: true
@@ -99,10 +103,6 @@ spec:
                     volumeSource:
                       type: object
                       x-kubernetes-preserve-unknown-fields: true
-                    subPath:
-                      type: string
-                    isSubPathExpr:
-                      type: boolean
               allowedSourceRanges:
                 type: array
                 nullable: true
@@ -636,6 +636,8 @@ spec:
                 required:
                   - size
                 properties:
+                  isSubPathExpr:
+                    type: boolean
                   iops:
                     type: integer
                   selector: