Migrate scylla artifact tests to SCT - scylladb/scylla-artifact-tests GitHub Wiki

Related SCT PR:

• https://github.com/scylladb/scylla-cluster-tests/pull/1778/files

TODO

• test centos8
• support debian10
• support private repo test
• add verify for scylla setup (referencing check code in artifact-tests)
  • verify ntp

DONE