Trick ansible-modules-validate to pass this with no RETURN.

This is a module present in 1.9 so we have to have it in even though it doesn't have RETURN

lib/ansible/modules/extras/web_infrastructure/taiga_issue.py

@@ -119,6 +119,7 @@ EXAMPLES = '''
     state: absent
 '''
 
+RETURN = '''# '''
 from os import getenv
 from os.path import isfile