use downstream.yaml to install packages and version check
use downstream.yaml to install packages and version check

remove hardcoded checks instead use downstream.yaml
defined in suites dir rh/downstream.yaml
for packages and version checks

Signed-off-by: Vasu Kulkarni <fdfdb2cd979b7b8f17791cc46d595851145a3915@redhat.com>

dmick/teuthology,ktdreyer/teuthology,SUSE/teuthology,ceph/teuthology,ktdreyer/teuthology,dmick/teuthology,SUSE/teuthology,SUSE/teuthology,ceph/teuthology,dmick/teuthology