Add Windows batch templates used by wbatch/osbash

The files added in this changeset are used by osbash as templates when
the user requests the creation of Windows batch files.

The names of the templates end on _bat rather than .bat because some
mail providers refuse to deliver .bat files even within archives.

The generated Windows batch files will have the proper extension (.bat).

Change-Id: I5dbed4bc6a4e30b50693208812d3dbfebecb2f19
Partial-Bug: 1312764
Implements: blueprint openstack-training-labs
Merge "Add Windows batch templates used by wbatch/osbash"