Revert "Revert "make test: fix broken interfaces""

This reverts commit c8efa29b6f9a91381897b54f1147daf922ed7164.

Change-Id: I1d5c5773d5f86a63073e255336bd9de628e26179
Signed-off-by: Klement Sekera <ksekera@cisco.com>
diff --git a/test/test_sctp.py b/test/test_sctp.py
index 32068ab..9396f05 100644
--- a/test/test_sctp.py
+++ b/test/test_sctp.py
@@ -16,7 +16,7 @@
     def setUp(self):
         super(TestSCTP, self).setUp()
         self.vapi.session_enable_disable(is_enabled=1)
-        self.create_loopback_interfaces(range(2))
+        self.create_loopback_interfaces(2)
 
         table_id = 0