Jinja2 is a stand-alone template engine for Python.
Copied from commit 00862f55be214e2247ad5aba3ab06a34afb20598 in
meta-cloud-services/meta-openstack and updated to version 2.7.3.
Signed-off-by: Ben Shelton <ben.shelton@ni.com>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>