Add a ticket stub about duplicated efforts.

ticket_stubs/pr_duplicate.md

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+Possible Duplicated Efforts
+===========================
+
+Hi!
+
+Thanks very much for your submission to Ansible.  It sincerely means a lot to us that you've taken time to contribute.
+
+It looks like the work from this pull request was duplicated by a recent change in the module.
+
+For some additional information:
+
+   * INSERT ITEM HERE
+
+However, we're absolutely always up for discussion.  Since this is a really busy project, we don't always see comments on closed tickets, but want to encourage
+open dialog.  You can stop by the development list, and we'd be glad to talk about it - and we might even be persuaded otherwise!
+
+   * https://groups.google.com/forum/#!forum/ansible-devel
+
+In the future, sometimes starting a discussion on the development list prior to implenting a feature can make getting things included a little easier, but it's not always neccessary.
+
+Thank you once again for this and your interest in Ansible!
+