Make sure all files have trailing newline (#5076)

* Make sure all files have trailing newline.

* Adjust tests.

tests/integration/targets/xml/tasks/test-remove-element.yml

@@ -16,6 +16,9 @@
       state: absent
     register: remove_element
 
+  - name: Add trailing newline
+    shell: echo "" >> /tmp/ansible-xml-beers.xml
+
   - name: Compare to expected result
     copy:
       src: results/test-remove-element.xml