TF-571 Use response from webfinger to get OIDC from authority

model/lib/oidc/oidc_configuration.dart

@@ -16,14 +16,6 @@ class OIDCConfiguration with EquatableMixin {
     required this.scopes
   });
 
-  factory OIDCConfiguration.initial() {
-    return OIDCConfiguration(
-        authority: 'https://auth.upn.integration-open-paas.org/auth/realms/mobile',
-        clientId: 'teammail-mobile',
-        scopes: ['openid', 'offline_access']
-    );
-  }
-
   String get discoveryUrl {
     if (authority.endsWith('/')) {
       return authority + wellKnownOpenId;

model/lib/oidc/request/oidc_request.dart

@@ -4,10 +4,10 @@ import 'package:equatable/equatable.dart';
 class OIDCRequest with EquatableMixin {
 
   final String baseUrl;
-  final String resourceUrl = 'https://gateway.upn.integration-open-paas.org';
-  final String relUrl = 'http://openid.net/specs/connect/1.0/issuer';
+  final String resourceUrl;
+  static const String relUrl = 'http://openid.net/specs/connect/1.0/issuer';
 
-  OIDCRequest({required this.baseUrl});
+  OIDCRequest({required this.baseUrl, required this.resourceUrl});
 
   @override
   List<Object?> get props => [baseUrl, resourceUrl, relUrl];