Test: Add cbench test case for igmp join leave loop test.
cbench code was modified as in cbench.patch to add igmp packet in support.
Disable vtn app activation as it is buggy and fails activation.

Change-Id: Ia37ad3d9e6011b970e24bcb9e0a2bb783e334545
diff --git a/src/test/cbench/cbenchTest.py b/src/test/cbench/cbenchTest.py
new file mode 100644
index 0000000..869b71a
--- /dev/null
+++ b/src/test/cbench/cbenchTest.py
@@ -0,0 +1,86 @@
+#
+# Copyright 2016-present Ciena Corporation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+import unittest
+import time
+import os
+from nose.tools import *
+from nose.twistedtools import reactor, deferred
+from twisted.internet import defer
+from OnosCtrl import OnosCtrl
+from scapy.all import *
+log.setLevel('INFO')
+
+class cbench_exchange(unittest.TestCase):
+
+    igmp_app_file = os.path.join(os.path.dirname(os.path.realpath(__file__)), '../apps',
+                                 'ciena-cordigmp-cbench-1.0-SNAPSHOT.oar')
+    igmp_app_file_default = os.path.join(os.path.dirname(os.path.realpath(__file__)), '../apps',
+                                         'ciena-cordigmp-2.0-SNAPSHOT.oar')
+    igmp_app = 'org.ciena.cordigmp'
+    switch_script = os.path.join(os.path.dirname(os.path.realpath(__file__)), '../setup', 'of-bridge.sh')
+    switch = 'br-int'
+    ctlr_ip = os.getenv('ONOS_CONTROLLER_IP', 'localhost')
+    ctlr_port = '6653'
+    cbench = os.path.join(os.path.dirname(os.path.realpath(__file__)), 'cbench')
+    cbench_igmp_options = '-g -D 3000 -w 10 -c {} -p {}'.format(ctlr_ip, ctlr_port)
+    CBENCH_TIMEOUT = 60
+
+    @classmethod
+    def setUpClass(cls):
+        cls.stop_switch()
+        cls.install_app()
+
+    @classmethod
+    def tearDownClass(cls):
+        cls.install_app_default()
+        cls.start_switch()
+
+    @classmethod
+    def install_app(cls):
+        OnosCtrl.uninstall_app(cls.igmp_app)
+        time.sleep(2)
+        OnosCtrl.install_app(cls.igmp_app_file)
+        time.sleep(3)
+
+    @classmethod
+    def install_app_default(cls):
+        OnosCtrl.uninstall_app(cls.igmp_app)
+        time.sleep(2)
+        OnosCtrl.install_app(cls.igmp_app_file_default)
+
+    @classmethod
+    def stop_switch(cls):
+        cmd = 'service openvswitch-switch stop'
+        log.info('Stopping switch before running cbench fakeswitch tests')
+        os.system(cmd)
+        time.sleep(1)
+
+    @classmethod
+    def start_switch(cls):
+        cmd = '{} {}'.format(cls.switch_script, cls.switch)
+        log.info('Starting back switch with command: \"%s\"', cmd)
+        os.system(cmd)
+        time.sleep(3)
+        
+    @deferred(CBENCH_TIMEOUT)
+    def test_cbench_igmp(self):
+        df = defer.Deferred()
+        def cbench_igmp_join_leave_loop(df):
+            cmd = '{} {} -l 20 -s 1 -m 1000'.format(self.cbench, self.cbench_igmp_options)
+            os.system(cmd)
+            df.callback(0)
+        reactor.callLater(0, cbench_igmp_join_leave_loop, df)
+        return df