allow users to opt out from globally enabled secret rotation (#2528)

* allow users to opt out from globally enabled secret rotation
* cover new option also in e2e test
* change ignore test to existing user

manifests/complete-postgres-manifest.yaml

@@ -19,6 +19,8 @@ spec:
     - createdb
     foo_user: []
 #    flyway: []
+#  usersIgnoringSecretRotation:
+#  - bar_user
 #  usersWithSecretRotation:
 #  - foo_user
 #  usersWithInPlaceSecretRotation:

manifests/postgresql.crd.yaml

@@ -610,6 +610,11 @@ spec:
                     - SUPERUSER
                     - nosuperuser
                     - NOSUPERUSER
+              usersIgnoringSecretRotation:
+                type: array
+                nullable: true
+                items:
+                  type: string
               usersWithInPlaceSecretRotation:
                 type: array
                 nullable: true