Adding BDD test/screenshot for "Edit Form"

Closes #3413928

modules/cloud_service_providers/openstack/tests/src/Behat/features/templates/OpenStack-ATDD-03-10-OperateVolumes.feature

@@ -44,6 +44,20 @@ Feature: Create and delete a volume for OpenStack as an "authenticated user"
     # And I should see "{{ drupal_user_name }}" in the "Authored by"
     And I should see neither error nor warning messages
 
+  @api @javascript
+  Scenario: Update the volume
+    Given I am logged in as user "{{ drupal_user_name }}"
+    When I visit "/{{ root_path }}/openstack/{{ cloud_context }}/volume"
+    And I run drush cron
+    And I should see the link "{{ volume_name_operate }}"
+    And I wait {{ wait }} milliseconds
+    And I click "{{ volume_name_operate }}"
+    And I wait {{ wait_render }} milliseconds
+    Then the url should match "/{{ root_path }}/openstack/{{ cloud_context }}/volume/"
+    And I click "Edit" in the actions
+    And the url should match "/edit"
+    And I take screenshot
+
   @api @javascript
   Scenario: Attach the volume to an instance
     Given I am logged in as user "{{ drupal_user_name }}"