Automation fix for SNMP alerts sub menu

Changes:
    - Modified
    Configure SNMP Manager On BMC With Invalid Setting Via GUI And Verify

Tested:
    - Ran successfully test_snmp_alerts_sub_menu.robot

Change-Id: I427c97bc1fa7eedd52e63b6af048458b08aadb28
Signed-off-by: Megha G N <Megha.G.N@ibm.com>
diff --git a/gui/gui_test/settings_menu/test_snmp_alerts_sub_menu.robot b/gui/gui_test/settings_menu/test_snmp_alerts_sub_menu.robot
index 24cf8a5..bb86061 100644
--- a/gui/gui_test/settings_menu/test_snmp_alerts_sub_menu.robot
+++ b/gui/gui_test/settings_menu/test_snmp_alerts_sub_menu.robot
@@ -288,7 +288,7 @@
     # ....                (e.g. Invalid format / Value must be between 0 – 65535).
 
     Configure SNMP Manager Via GUI  ${snmp_manager_ip}  ${snmp_manager_port}
-    Wait Until Page Contains   ${expected_error}  timeout=10sec
+    Wait Until Page Contains   ${expected_error}  timeout=30sec
     ${status}=  Run Keyword And Return Status
     ...  Verify SNMP Manager Configured On BMC  ${snmp_manager_ip}  ${snmp_manager_port}
     Should Be Equal As Strings  ${status}  False