Add missing Tag test case name

Change-Id: Iaa0de24b00378cf0b4eb598236cb85946aec0921
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/redfish/managers/test_bmc_ipv6.robot b/redfish/managers/test_bmc_ipv6.robot
index 62b91c7..9759a67 100644
--- a/redfish/managers/test_bmc_ipv6.robot
+++ b/redfish/managers/test_bmc_ipv6.robot
@@ -43,6 +43,7 @@
 
 Get IPv6 Default Gateway And Verify
     [Documentation]  Get IPv6 default gateway and verify.
+    [Tags]  Get_IPv6_Default_Gateway_And_Verify
 
     ${resp}=  Redfish.Get  ${REDFISH_NW_ETH_IFACE}${ethernet_interface}
     ${ipv6_gateway}=  Get From Dictionary  ${resp.dict}  IPv6DefaultGateway