scylla-artifacts.py: Introduce CI testing
scylla-artifacts.py: Introduce CI testing

Make it possible to feed the test with a parameter
sw_repo, from where the info necessary to install
packages can be fetched.

Signed-off-by: Lucas Meneghel Rodrigues <8ad3460456640ab580599f5440c5a8d925a620b9@scylladb.com>

scylladb/scylla-artifact-tests,scylladb/scylla-artifact-tests,lmr/scylla-artifact-tests