Automation fix for SNMP tescases

Changes :
    - Modified SNMP Testcase
    - Modified "Reboot Via GUI" keyword

Tested:
    - Ran successfully gui_test/settings_menu/test_snmp_alerts_sub_menu.robot
    - Ran successfully lib/gui_resource.robot

Change-Id: I7b5e3bd18eb56d1b6ef85d45db519b7e27cdeffe
Signed-off-by: Megha G N <Megha.G.N@ibm.com>
diff --git a/gui/lib/gui_resource.robot b/gui/lib/gui_resource.robot
index 308762a..08ac09e 100644
--- a/gui/lib/gui_resource.robot
+++ b/gui/lib/gui_resource.robot
@@ -150,6 +150,6 @@
     Click Element  ${xpath_operations_menu}
     Click Element  ${xpath_reboot_bmc_sub_menu}
     Click Button  ${xpath_reboot_bmc_button}
-    Click Button  ${xpath_confirm_bmc_reboot}
+    Wait Until Keyword Succeeds  30 sec  10 sec  Click Button  ${xpath_confirm_bmc_reboot}
     Wait Until Keyword Succeeds  2 min  10 sec  Is BMC Unpingable
     Wait For Host To Ping  ${OPENBMC_HOST}  1 min