Added refresh gui to refresh page after certificate installation

Change-Id: I4faf9864c9b125a8dad41cb1cb92b3ef3b0d623b
Signed-off-by: Ashwini Chandrappa <Ashwini.Chandrappa777@ibm.com>
diff --git a/gui/gui_test/security_and_access_menu/test_certificates_sub_menu.robot b/gui/gui_test/security_and_access_menu/test_certificates_sub_menu.robot
index 9642af0..6c15780 100644
--- a/gui/gui_test/security_and_access_menu/test_certificates_sub_menu.robot
+++ b/gui/gui_test/security_and_access_menu/test_certificates_sub_menu.robot
@@ -87,7 +87,8 @@
     ${file_data}=  Generate Certificate File Data  CA
     Install Certificate File On BMC  ${REDFISH_CA_CERTIFICATE_URI}  ok  data=${file_data}
 
-    # Verify CA certificate availability in GUI.
+    # Refresh GUI and verify CA certificate availability in GUI.
+    Refresh GUI
     Wait Until Page Contains  CA Certificate  timeout=10
 
 
@@ -112,7 +113,8 @@
     ${file_data}=  Generate Certificate File Data  Client
     Install Certificate File On BMC  ${REDFISH_LDAP_CERTIFICATE_URI}  ok  data=${file_data}
 
-    # Verify certificate is available in GUI.
+    # Refresh GUI and verify certificate is available in GUI.
+    Refresh GUI
     Wait Until Page Contains  LDAP Certificate  timeout=10