[validation] Improve relationship between jobs

- Added a fix so that when bluval-run-daily-tests job fails, the upstream
akraino-validation-lab-daily job also fails.
- Made the validation parameters more generic (the tests can be ran on
openstack too, not just on k8s clusters)
- Moved the templates from the project folder to the templates folder

JIRA: VAL-98

Signed-off-by: Cristina Pauna <cristina.pauna@enea.com>
Change-Id: I915ff9a0347e20390b297483b39a051f39fdf205