fix(ocm): Adjust for recend change for federated user IDs

The UserIds as returned by e.g. GetAcceptedUser do already contain
the provider domain in the IDP field now.

Also adjust the provider domain in the OCM config to be really a domain
without URI scheme and path.

tests/acceptance/bootstrap/FeatureContext.php

@@ -2396,7 +2396,7 @@ class FeatureContext extends BehatVariablesContext {
 				"code" => "%identities_issuer_id_pattern%",
 				"function" => [
 					__NAMESPACE__ . '\TestHelpers\GraphHelper',
-					"getUUIDv4Regex"
+					"getFederatedUserRegex"
 				],
 				"parameter" => []
 			],