e2e: defend on k8s version for snap-controller install
e2e: defend on k8s version for snap-controller install

Currently the scripts/install-snapshot.sh script needs to be called
depending on the Kubernetes version. It would be much easier to use the
script if it is intelligent enough to decide itself whether k8s snapshot
controller needs to be installed or not.

Fixes: #1139
Signed-off-by: Prasanna Kumar Kalever <a78d8f98557446023f5b3ba9944d7be259a978a3@redhat.com>

ceph/ceph-csi,ceph/ceph-csi,ceph/ceph-csi,ceph/ceph-csi