secure_cluster: fix leftover version check
secure_cluster: fix leftover version check

Missed by #953.

Signed-off-by: Patrick Donnelly <d35c2028e065409a3eff47e1b4cba347a9379b4b@redhat.com>

jsaintrocc/ceph-ansible,bengland2/ceph-ansible,guits/ceph-ansible,albertomurillo/ceph-ansible,jsaintrocc/ceph-ansible,ceph/ceph-ansible,albertomurillo/ceph-ansible,verdurin/ceph-ansible-1,guits/ceph-ansible,bengland2/ceph-ansible,WingkaiHo/ceph-ansible,fgal/ceph-ansible,albertomurillo/ceph-ansible,font/ceph-ansible,verdurin/ceph-ansible-1,font/ceph-ansible,ceph/ceph-ansible,WingkaiHo/ceph-ansible,travmi/ceph-ansible,jtaleric/ceph-ansible,fgal/ceph-ansible,WingkaiHo/ceph-ansible,travmi/ceph-ansible,jtaleric/ceph-ansible