Add !include-jinja2 for rendering templates with Jinja2

This template included using !include-jinja2:

"""
{{ my_var }}
"""

is rendered the same as an existing template that looks like this:

"""
{my_var}
"""

This also allows the use of Jinja2's richer syntax:

"""
{% for test_environment in configuration.get("envs", ["py35"]) %}
tox -e {{ test_environment }}
{% endfor %}
"""

Story: 2001135

Change-Id: Ia3ee21822d6e9237f5ea46796bc8810ecac61e2c

1 files changed, 1 insertions, 0 deletions

diff --git a/requirements.txt b/requirements.txt
index 07e73a21..f0e7ab42 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,3 +7,4 @@ pbr>=1.8 # Apache-2.0
 stevedore>=1.17.1 # Apache-2.0
 python-jenkins>=0.4.8
 fasteners
+Jinja2