More fixes for staging pod tests

- Fix error if dhcp option is missing on host config
- Ignore some more packets at start and end of traffic flow

Change-Id: I98a3757727626a0e5743a3ab8fb6690ea5047798
diff --git a/TestON/drivers/common/cli/hostdriver.py b/TestON/drivers/common/cli/hostdriver.py
index 8f3037e..e51c5d6 100644
--- a/TestON/drivers/common/cli/hostdriver.py
+++ b/TestON/drivers/common/cli/hostdriver.py
@@ -56,7 +56,7 @@
             self.interfaces.append( { 'ips': [ self.options[ 'ip' ] ],
                                       'isUp': True,
                                       'mac': self.options[ 'mac' ],
-                                      'dhcp': self.options[ 'dhcp' ],
+                                      'dhcp': self.options.get( 'dhcp', "False" ),
                                       'name': self.options.get( 'interfaceName', None ) } )
 
             try: