Comment 15 for bug 1454401

Reviewed: https://review.openstack.org/300891
Committed: https://git.openstack.org/cgit/openstack/heat/commit/?id=83966b7bdebb91df3752671b7326955d2b733d75
Submitter: Jenkins
Branch: master

commit 83966b7bdebb91df3752671b7326955d2b733d75
Author: ricolin <email address hidden>
Date: Mon Apr 11 16:14:59 2016 +0800

    Add `template_dir` to config

    Allow global environment contain global template files.
    This can lead to further access to global template files.
    For example a template file `my_tmpl.yaml` under global template
    directory (`/etc/heat/templates` by default) can be directly accessed in
    stack with `get_file`.
    Partial-Bug: #1454401

    Change-Id: I0a1c9d50441f88144980214fbc8e6757193cfb41