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>

test/test_classifier.py

@@ -25,6 +25,10 @@ class TestClassifier(VppTestCase):
         super(TestClassifier, cls).setUpClass()
         cls.acl_active_table = ''
 
+    @classmethod
+    def tearDownClass(cls):
+        super(TestClassifier, cls).tearDownClass()
+
     def setUp(self):
         """
         Perform test setup before test case.
@@ -323,6 +327,14 @@ class TestClassifier(VppTestCase):
 class TestClassifierIP(TestClassifier):
     """ Classifier IP Test Case """
 
+    @classmethod
+    def setUpClass(cls):
+        super(TestClassifierIP, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestClassifierIP, cls).tearDownClass()
+
     def test_iacl_src_ip(self):
         """ Source IP iACL test
 
@@ -419,6 +431,14 @@ class TestClassifierIP(TestClassifier):
 class TestClassifierUDP(TestClassifier):
     """ Classifier UDP proto Test Case """
 
+    @classmethod
+    def setUpClass(cls):
+        super(TestClassifierUDP, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestClassifierUDP, cls).tearDownClass()
+
     def test_iacl_proto_udp(self):
         """ UDP protocol iACL test
 
@@ -559,6 +579,14 @@ class TestClassifierUDP(TestClassifier):
 class TestClassifierTCP(TestClassifier):
     """ Classifier TCP proto Test Case """
 
+    @classmethod
+    def setUpClass(cls):
+        super(TestClassifierTCP, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestClassifierTCP, cls).tearDownClass()
+
     def test_iacl_proto_tcp(self):
         """ TCP protocol iACL test
 
@@ -700,6 +728,14 @@ class TestClassifierTCP(TestClassifier):
 class TestClassifierIPOut(TestClassifier):
     """ Classifier output IP Test Case """
 
+    @classmethod
+    def setUpClass(cls):
+        super(TestClassifierIPOut, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestClassifierIPOut, cls).tearDownClass()
+
     def test_acl_ip_out(self):
         """ Output IP ACL test
 
@@ -735,6 +771,14 @@ class TestClassifierIPOut(TestClassifier):
 class TestClassifierMAC(TestClassifier):
     """ Classifier MAC Test Case """
 
+    @classmethod
+    def setUpClass(cls):
+        super(TestClassifierMAC, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestClassifierMAC, cls).tearDownClass()
+
     def test_acl_mac(self):
         """ MAC ACL test
 
@@ -770,6 +814,14 @@ class TestClassifierMAC(TestClassifier):
 class TestClassifierPBR(TestClassifier):
     """ Classifier PBR Test Case """
 
+    @classmethod
+    def setUpClass(cls):
+        super(TestClassifierPBR, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestClassifierPBR, cls).tearDownClass()
+
     def test_acl_pbr(self):
         """ IP PBR test