Parameterise Iss Claim Value

[novicedev7291]

Authorization service is modifying iss claim using jwtTokenCustomizer bean, if we don't specify the claim ourselves, default implementation seems to be setting value http://localhost:{running_port} which might be okay when running the example locally, but fails to work when we are running inside docker or it may fail when the authorization server and resource server are not having single domain.

So, there must be a way to provide the value to service instead of hard coding it.