This commit makes sure that the parser considers the git-repos field
mandatory for automated tests.

It also updates one test file with a new test definition using
git-repos.

Signed-off-by: Luis Araujo <luis.araujo@collabora.co.uk>

This will allow to show the specific branch that needs to be used
during cloning the tests scripts repository in the test cases
pages.

Signed-off-by: Luis Araujo <luis.araujo@collabora.co.uk>

Generate new tests files with the recent format changes.

Signed-off-by: Luis Araujo <luis.araujo@collabora.co.uk>

This commit improves the modules macro to avoid redundant information
in the test cases using such a macro.

Signed-off-by: Luis Araujo <luis.araujo@collabora.co.uk>

The new install:git-repos directive in the test case YAML files
will allow to clone the tests scripts in order to integrate the
test cases into LAVA.

This commit adapts the renderer to properly generate test case pages
with this new directive.

Signed-off-by: Luis Araujo <luis.araujo@collabora.co.uk>

This commit applies several changes in order to turn the
renderer code into a proper python module and command that
can be easily installed using the setuptools module.

Main changes:
- Main executable is named atc
- Use setuptools to install renderer executable
- Improve tests so they can be easily executed by packages
- Update README instructions

Signed-off-by: Luis Araujo <luis.araujo@collabora.co.uk>