Tests Cleanup: Fix missing calls to setUpClass/tearDownClass.

Continuation/Part 2 of https://gerrit.fd.io/r/#/c/17092/

Change-Id: Id0122d84eaf2c05d29e5be63a594d5e528ee7c9a
Signed-off-by: Paul Vinciguerra <pvinci@vinciconsulting.com>
diff --git a/test/test_ip_mcast.py b/test/test_ip_mcast.py
index 81da693..21794d6 100644
--- a/test/test_ip_mcast.py
+++ b/test/test_ip_mcast.py
@@ -25,6 +25,14 @@
 class TestMFIB(VppTestCase):
     """ MFIB Test Case """
 
+    @classmethod
+    def setUpClass(cls):
+        super(TestMFIB, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestMFIB, cls).tearDownClass()
+
     def setUp(self):
         super(TestMFIB, self).setUp()
 
@@ -40,6 +48,14 @@
 class TestIPMcast(VppTestCase):
     """ IP Multicast Test Case """
 
+    @classmethod
+    def setUpClass(cls):
+        super(TestIPMcast, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestIPMcast, cls).tearDownClass()
+
     def setUp(self):
         super(TestIPMcast, self).setUp()