Scope not generated for Auth0 strategy

[akagomez]

It isn't stated in the auth0/passport-auth0 documentation, but the Auth0 strategy will not return any useful profile data unless you provide a scope. See: https://auth0.com/docs/scopes/current#standard-claims.

Currently the generator only adds a domain to the Auth0 config:

https://github.com/feathersjs/generator-feathers/blob/15aa20fa73c9e07e167b68c26b72ff119da1364a/generators/authentication/index.js#L109

However, we probably want to also include a scope in the same way we do for the Google and Facebook strategies.

[daffl]

I think it definitely makes sense to at least add profile just like for the other strategies. We're not running any oAuth tests so a pull request should be fairly straightforward by just adding those lines.