Fix for deprecated keywords for GUI

Changes:
 - Run Keyword If is deprecated since Robot
   Framework version 5.*, use 'IF' instead

Tested:
 - Checked using robot dry-run to make sure the
   syntax is not broken


Change-Id: I60980dd90aee4486e4280eb50abe931bbd687b76
Signed-off-by: Ramyasree Reddicherla <rramyasr@in.ibm.com>
diff --git a/gui/lib/gui_resource.robot b/gui/lib/gui_resource.robot
index 1bc369b..5c13da7 100644
--- a/gui/lib/gui_resource.robot
+++ b/gui/lib/gui_resource.robot
@@ -35,10 +35,11 @@
     #          (e.g. gc for google chrome, ff for firefox).
     # mode     Browser opening mode(e.g. headless, header).
 
-    ${browser_ID}=  Run Keyword If  '${mode}' == 'headless'
-    ...  Launch Headless Browser  ${URL}  ${browser}
-    ...  ELSE  Open Browser  ${URL}  ${browser}
-
+    IF  '${mode}' == 'headless'
+       ${browser_ID}=  Launch Headless Browser  ${URL}  ${browser}
+    ELSE
+       ${browser_ID}=  Open Browser  ${URL}  ${browser}
+    END
     RETURN  ${browser_ID}
 
 
@@ -207,9 +208,11 @@
     ${cli_name_servers}=  CLI Get Nameservers
     ${cmd_status}=  Run Keyword And Return Status
     ...  List Should Contain Sub List  ${cli_name_servers}  ${dns_server}
-    Run Keyword If  '${expected_status}' == '${HTTP_OK}'
-    ...  Should Be True  ${cmd_status} == ${True}
-    ...  ELSE  Should Not Be True  ${cmd_status}
+    IF  '${expected_status}' == '${HTTP_OK}'
+       Should Be True  ${cmd_status} == ${True}
+    ELSE
+       Should Not Be True  ${cmd_status}
+    END
 
 
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