Luis Araujo authored Jun 12, 2019 and Emanuele Aina committed Jun 24, 2019

Update the test cases table from the apertis-test-cases repository
automatically.

This commit rewrites the code to create a TestCasesTable object that
can be used to create and update the table conveniently from other modules.

The commit also creates a background process (using the apscheduler) in
order to pull updates from the apertis-test-cases repo (every 15
minutes) and update the table automatically.

The commit also apply the necessary changes in the Dockerfile to install
the new git and apscheduler packages, and in the code to generate the
report page.

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