Make runner handling more resilient

Retry getting the runners token if it's not available initially

Ensure the docker runner container is stopped even if there's a
problem removing it from the project

qa/qa/resource/runner.rb

@@ -54,7 +54,7 @@ module QA
         @id = this_runner[:id]
 
         super
-
+      ensure
         Service::DockerRun::GitlabRunner.new(name).remove!
       end
 

qa/qa/resource/sandbox.rb

@@ -41,6 +41,14 @@ module QA
         resource_web_url(api_get)
       rescue ResourceNotFoundError
         super
+
+        # If the group was just created the runners token might not be
+        # available via the API immediately.
+        Support::Retrier.retry_on_exception(sleep_interval: 5) do
+          resource = resource_web_url(api_get)
+          populate(:runners_token)
+          resource
+        end
       end
 
       def api_get_path