dist/simplesamlphp-authsources: set entityID for service provider

dist/simplesamlphp-authsources.php

@@ -6,6 +6,7 @@ $config = [
   /* This is the name of this authentication source, and will be used to access it later. */
   'default-sp' => [
     'saml:SP',
+    'entityID' => 'https://www.pvv.ntnu.no/simplesaml/',
     'idp' => 'https://idp.pvv.ntnu.no/',
   ],
 ];