Update websocket service name in config template
Update websocket service name in config template

The name was changed to "zaqar-websocket" recently. Having the old name
in the configuration file leads to errors and confusion when overriding
URLs, as the override won't get picked up with the old name.

Change-Id: I7acf900d094e41862958b3cddbb66ff0d8a3e46f
Closes-Bug: #1630965

openstack/puppet-tripleo,openstack/puppet-tripleo,openstack/puppet-tripleo