Remove and prevent trailing whitespace (#10199)

* Remove trailing whitespace.

* Add no-trailing-whitespace extra test.

* Re-add needed trailing whitespace.

* Remove one more trailing whitespace.

tests/integration/targets/gitlab_group_variable/tasks/main.yml

@@ -242,7 +242,7 @@
       - gitlab_group_variable_state is changed
   when: gitlab_premium_tests is defined
 
-- name: apply again the environment scope change 
+- name: apply again the environment scope change
   gitlab_group_variable:
     api_url: "{{ gitlab_host }}"
     api_token: "{{ gitlab_login_token }}"