lava: Update for the new test generation tools
This commit removes the use of profiles to generate test jobs and add information about test groups.
It also removes the personal_lava_tests.md page which is covered in guides/lava-apertis-testing
This commit removes the use of profiles to generate test jobs and add information about test groups.
It also removes the personal_lava_tests.md page which is covered in guides/lava-apertis-testing