Adding MAC tests to skiplist.

Signed-off-by: Prashanth Katti <prkatti1@in.ibm.com>
Change-Id: Iea3e568a7be20b35626c30d72b200382d76fa35d
diff --git a/redfish/managers/test_bmc_network_mac.robot b/redfish/managers/test_bmc_network_mac.robot
index 50585d5..1cd05fc 100644
--- a/redfish/managers/test_bmc_network_mac.robot
+++ b/redfish/managers/test_bmc_network_mac.robot
@@ -9,6 +9,8 @@
 Suite Setup    Suite Setup Execution
 Test Teardown  Test Teardown Execution
 
+Force Tags     MAC_Test
+
 *** Variables ***
 
 # AA:AA:AA:AA:AA:AA series is a valid MAC and does not exist in