Initiate packetization of Testing reporting

Testing reporting provides
- static reporting pages [1] (jinja2)
- landing pages including test case catalogue [2] (angular)

It consumes the Test API to build web pages providing status for
the testing projects (so far functest, yardstick, storperf and
qtip).

Dockerization has been initiated [3]. The goal is to replace the
static page hosted on testresults.opnfv.org by a docker regenerated
and redeployed when reporting code is changed

But the docker and more generally the testing reporting directory
must be refactored to
- manage dependencies properly
- leverage tox (py27, docs, pylint, pep8)

This patch
- setups tox (py27, pep8, pylint, docs)
- integrate the requirement management
- fix pep8 errors
- introduce 1 dummy unit test

This patch does not
- fix pylint errors
- create any doc

[1]: http://testresults.opnfv.org/reporting2/display/index.html
[2]: http://testresults.opnfv.org/reporting2/reporting/index.html
[3]: https://gerrit.opnfv.org/gerrit/#/c/36735/

Change-Id: I4613de7ca7036d6c6bbb8f58ade492b1d673599b
Signed-off-by: Morgan Richomme <morgan.richomme@orange.com>