Made issueby customizable and with feedback

[jeremy379]

Changed

New configuration key "issueBy" allowing to choose how the issueBy field is populated.

Options are:

• "laravel-url", use laravel feature from "url('/')"
• "auto-detect" (defaultà : use $_SERVER to detect host and scheme
• Any other string will be used "as is".

[alecpl]

Here's some comments:

• it should be "issuedBy" not "issueBy"
• the value in the DiscoveryController and IdTokenResponse must be the same.
• in the IdTokenController we have $currentRequestService which we probably should use (as it was before my changes there), but I'm not sure about how to get the request in the DiscoveryController.

[bbredewold]

With @alecpl remarks, it looks good to me :)

[jeremy379]

Thanks for your feedback, I've applied some changed

• Extracted the retrieval of the value in a dedicated class
• Using back the CurrentRequestService by default but with a fallback on $_SERVER value (opt-in via configuration)