Parameterise oauth2 options

[demetris-manikas]

Hi.
I tried using the oauth2 module provided by the platform with Keycloak as the provider and stumbled on a number of problems.

First one was that I did not find a way to define the scopes used.

Second was that the code after calling the profile endpoint assumes that the result contains an attributes property which is not the case for Keycloak.

Third is that the code expects an id attribute in the profile data. I managed to work around this one by defining a mapped property in Keycloak but it would be nice if the name of the property was parametric.

It would be nice if these attributes where configurable through a config file.
What do you think?

Thanks