use utils.login() for logging users in (similar to #15300)

src/authentic2_auth_fedict/adapters.py

@@ -24,10 +24,14 @@ import lasso
 
 from mellon.adapters import DefaultAdapter
 from authentic2.models import Attribute
+from authentic2 import utils
 from authentic2.a2_rbac.utils import get_default_ou
 
 
 class AuthenticAdapter(DefaultAdapter):
+    def auth_login(self, request, user):
+        utils.login(request, user, 'fedict')
+
     def lookup_user(self, idp, saml_attributes):
         if 'email' in saml_attributes:
             # XXX: remove email from received attributes for now, this