Make sure all files have trailing newline (#5076) (#5081)

* Make sure all files have trailing newline.

* Adjust tests.

(cherry picked from commit fa6c009ff0)

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

@@ -96,4 +96,4 @@
 - name: Assert that the password no longer exists
   ansible.builtin.assert:
     that:
-      - test_del_password.passphrase is not defined
+      - test_del_password.passphrase is not defined