Update the test cases names so they match the names specified
in the lava job file.

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

This commit updates the remaining tests cases for LAVA
integration.

The change consists in adding the `git-repos` directive so they
can fetch the tests scripts from LAVA.

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

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

- Add the remaining test cases for tiny containers.
- Add a new image type: tiny-lxc
- Add new execution type: all

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