Added Sleep after configure mac address

Change-Id: If67f801287d09bba32527b091e7bf9dda1429e8f
Signed-off-by: Anves Kumar rayankula <anvesr77@in.ibm.com>
diff --git a/redfish/managers/test_bmc_network_mac.robot b/redfish/managers/test_bmc_network_mac.robot
index 1fc0860..247f876 100644
--- a/redfish/managers/test_bmc_network_mac.robot
+++ b/redfish/managers/test_bmc_network_mac.robot
@@ -176,10 +176,10 @@
     ...  valid_status_codes=[200, 400, 500]
 
     # After any modification on network interface, BMC restarts network
-    # module, wait until it is reachable.
+    # Note: Network restart takes around 15-18s after patch request processing.
+    Sleep  ${NETWORK_TIMEOUT}s
 
-    Wait Until Keyword Succeeds  ${NETWORK_TIMEOUT}  ${NETWORK_RETRY_TIME}
-    ...  redfish.Get  ${REDFISH_NW_ETH_IFACE}${ethernet_interface}
+    Redfish.Get  ${REDFISH_NW_ETH_IFACE}${ethernet_interface}
 
     # Verify whether new MAC address is populated on BMC system.
     # It should not allow to configure invalid settings.