Updated test Verify_Canceling_Operation_On_BMC_Reboot_Operation

Changes :
     - added Coordinates
tested :
     - ran test successfully with gui/gui_test/operations_menu/test_reboot_bmc_sub_menu.robot

Change-Id: Ic5b8b53b2f978c384036e62340f3dfdd5647f136
Signed-off-by: rramyasr-in <rramyasr@in.ibm.com>
diff --git a/gui/gui_test/operations_menu/test_reboot_bmc_sub_menu.robot b/gui/gui_test/operations_menu/test_reboot_bmc_sub_menu.robot
index 17d5d08..934596e 100644
--- a/gui/gui_test/operations_menu/test_reboot_bmc_sub_menu.robot
+++ b/gui/gui_test/operations_menu/test_reboot_bmc_sub_menu.robot
@@ -45,7 +45,7 @@
     [Tags]  Verify_Canceling_Operation_On_BMC_Reboot_Operation
 
     Click Element  ${xpath_reboot_bmc_button}
-    Click Element  ${xpath_reboot_cancel_button}
+    Click Element At Coordinates  ${xpath_reboot_cancel_button}  0  0
     Wait Until Element Is Not Visible  ${xpath_reboot_cancel_button}  timeout=15