fix timeout test

atest/execute_command.robot

@@ -9,7 +9,14 @@ Library         DateTime
 Execute Timeout
     [Documentation]  FAIL  SSHClientException: Timed out in 3 seconds
     ...              LOG  1:2  INFO  GLOB:  *Command no. 1*Command no. 2*Command no. 3*
-    Execute Command  for i in {1..10}; do echo "Command no. $i"; sleep 1; done  timeout=3s  output_if_timeout=True
+    TRY
+        Execute Command  for i in {1..10}; do echo "Command no. $i"; sleep 1; done  timeout=3s  output_if_timeout=True
+        Fail    Expected timeout did not occur.
+    EXCEPT  SSHClientException: Timed out in 3 seconds
+        Log    Test passed
+    EXCEPT    AS    ${exception}
+        Fail    Unexpected exception: ${exception}
+    END
 
 Execute Command With Defaults
     ${stdout} =  Execute Command  ${REMOTE TEST ROOT}/${TEST SCRIPT NAME}