update kubernetes api versions to be current to 1.8.8

aws/efs/README.md

aws/efs/deploy/class.yaml

aws/efs/deploy/manifest.yaml

ceph/cephfs/deploy/rbac/clusterrole.yaml

ceph/cephfs/deploy/rbac/clusterrolebinding.yaml

ceph/cephfs/deploy/rbac/role.yaml

ceph/cephfs/deploy/rbac/rolebinding.yaml

ceph/rbd/deploy/rbac/clusterrole.yaml

ceph/rbd/deploy/rbac/clusterrolebinding.yaml

ceph/rbd/deploy/rbac/role.yaml

ceph/rbd/deploy/rbac/rolebinding.yaml

digitalocean/manifests/rbac/clusterrole.yaml

digitalocean/manifests/rbac/clusterrolebinding.yaml

digitalocean/manifests/rbac/role.yaml

digitalocean/manifests/rbac/rolebinding.yaml

docs/demo/hostpath-provisioner/README.md

docs/demo/hostpath-provisioner/class.yaml

flex/examples/sc.yaml

iscsi/targetd/README.md

...loy-provisioner/templates/iscsi-provisioner-class.yaml.j2