ERROR: Failure: ImportError (No module named jinja2.exceptions)

[Chris Johnston]

======================================================================
ERROR: Failure: ImportError (No module named jinja2.exceptions)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/chris/virtualenvs/charmhelpers/local/lib/python2.7/site-packages/nose/loader.py", line 411, in loadTestsFromName
    addr.filename, addr.module)
  File "/home/chris/virtualenvs/charmhelpers/local/lib/python2.7/site-packages/nose/importer.py", line 47, in importFromPath
    return self.importFromDir(dir_path, fqname)
  File "/home/chris/virtualenvs/charmhelpers/local/lib/python2.7/site-packages/nose/importer.py", line 94, in importFromDir
    mod = load_module(part_fqname, fh, filename, desc)
  File "/home/chris/Projects/ch-problems/tests/contrib/openstack/test_os_templating.py", line 9, in <module>
    from jinja2.exceptions import TemplateNotFound
ImportError: No module named jinja2.exceptions

Jinja2 is required to run the tests, however it isn't installed via test_requirements.txt