Fix QA spec flaky for application secret variables

The QA spec for application secrets fails when run after the auto devops
spec because no pipeline for it is triggered :(

When the QA spec for application has passed, it has always been the
first spec to run hence it is able to set the K8S_SECRET_ variable
before the pipeline triggered by the initial commit has run.

The correct fix would be manually trigger a pipeline after we have added
the K8S_SECRET_* variable. However, because Helm does not update the
Deployment, we need to push a code change to make Helm update the
Deployment and the pods.

qa/qa/specs/features/browser_ui/7_configure/auto_devops/create_project_with_auto_devops_spec.rb

@@ -98,6 +98,17 @@ module QA
               resource.value = 'You can see this application secret'
             end
 
+            # Our current Auto DevOps implementation won't update the production
+            # app if we only update a CI variable with no code change.
+            #
+            # Workaround: push new code and use the resultant pipeline.
+            Resource::Repository::ProjectPush.fabricate! do |push|
+              push.project = @project
+              push.commit_message = 'Force a Deployment change by pushing new code'
+              push.file_name = 'new_file.txt'
+              push.file_content = 'new file contents'
+            end
+
             @project.visit!
             Page::Project::Menu.act { click_ci_cd_pipelines }
             Page::Project::Pipeline::Index.act { go_to_latest_pipeline }