don't auto provision the user on a global scale setup

with global scale the authentication happens on the master node
and then the user is forward to the node they are located.
Therefore no user should be created on the master node after the
authentication at the idp was successful

Signed-off-by: Bjoern Schiessle <bjoern@schiessle.org>

lib/Controller/SAMLController.php

@@ -98,6 +98,12 @@ class SAMLController extends Controller {
 	 * @throws NoUserFoundException
 	 */
 	private function autoprovisionIfPossible(array $auth) {
+
+		// nothing to do here, in case of a global scale setup
+		if ($this->config->getSystemValue('gs.enabled', false)) {
+			return;
+		}
+
 		$prefix = $this->SAMLSettings->getPrefix();
 		$uidMapping = $this->config->getAppValue('user_saml', $prefix . 'general-uid_mapping');
 		if(isset($auth[$uidMapping])) {