fix(version_utils.py): Enabled get Scylla version from private repo
fix(version_utils.py): Enabled get Scylla version from private repo

* Bug ticket https://github.com/scylladb/scylla-cluster-tests/issues/2430
* Trello: https://trello.com/c/StPEq5j3

scylladb/scylla-cluster-tests,scylladb/scylla-longevity-tests,scylladb/scylla-cluster-tests,scylladb/scylla-longevity-tests,scylladb/scylla-cluster-tests,scylladb/scylla-longevity-tests,scylladb/scylla-cluster-tests,scylladb/scylla-cluster-tests