the zun-wsproxy image is exists in kolla[0], but kolla-ansible
missing, this ps to add it.

[0]: https://github.com/openstack/kolla/tree/master/docker/zun/zun-wsproxy


Co-Authored-By: ZhijunWei <wzj334965317@outlook.com>

Change-Id: I89ef3463dfa5df8cf2d963ff0f0c7ddc382fc79b
Closes-Bug: #1765728