Fix hostport mapping for IPv6 addresses
Fix hostport mapping for IPv6 addresses

The current hostport manager of Kubernetes does not support IPv6
addresses, so we have to skip these to avoid sandbox setup failures.

Signed-off-by: Sascha Grunert <70ab469ddb2ac3e35f32ed7c2fd1cca514b2e879@suse.com>

kubernetes-incubator/cri-o,nalind/cri-o,kubernetes-incubator/ocid,nalind/cri-o,mikebrow/cri-o,mikebrow/cri-o,kubernetes-incubator/cri-o,nalind/cri-o,mikebrow/cri-o,kubernetes-incubator/ocid,kubernetes-incubator/cri-o,kubernetes-incubator/ocid,kubernetes-incubator/cri-o,mikebrow/cri-o