Add public ingress url to allowed return urls

[bencekov]

When the public ingress is available, its url is added to the allowed return urls in Kratos' config file.

If the url of the public ingress is http://ingress:80/path/subpath it gets added to the config file as https://ingress/*.

[shipperizer]

there are 4 commits and 16 additions, which are not really distinguishable/easy to separate

I'd say make one commit out of it