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_vcl.py b/test/test_vcl.py
index cba8c67..79eb75f 100644
--- a/test/test_vcl.py
+++ b/test/test_vcl.py
@@ -68,12 +68,12 @@
         worker_client.join(self.timeout)
         try:
             self.validateResults(worker_client, worker_server, self.timeout)
-        except Exception, error:
+        except Exception as error:
             self.fail("Failed with %s" % error)
 
     def thru_host_stack_setup(self):
         self.vapi.session_enable_disable(is_enabled=1)
-        self.create_loopback_interfaces(range(2))
+        self.create_loopback_interfaces(2)
 
         table_id = 1
 
@@ -117,7 +117,7 @@
 
     def thru_host_stack_ipv6_setup(self):
         self.vapi.session_enable_disable(is_enabled=1)
-        self.create_loopback_interfaces(range(2))
+        self.create_loopback_interfaces(2)
 
         table_id = 1
 
@@ -182,7 +182,7 @@
 
         try:
             self.validateResults(worker_client, worker_server, self.timeout)
-        except Exception, error:
+        except Exception as error:
             self.fail("Failed with %s" % error)
 
     def validateResults(self, worker_client, worker_server, timeout):