Harden Tech Profile test

Change-Id: I074249be1fbc433fad3aa61e405b91e32d0f95d0
(cherry picked from commit 9fb2323a3a3b17fcdd7bee7032ad7d7af5347800)
diff --git a/libraries/utils.robot b/libraries/utils.robot
index 4f8b7ac..43872e8 100644
--- a/libraries/utils.robot
+++ b/libraries/utils.robot
@@ -602,6 +602,8 @@
     ...        SSHLibrary.Start Command    kubectl -n ${namespace} exec ${container_name} -- ${cmd}
     ...    ELSE
     ...        SSHLibrary.Start Command    ${cmd}
+    # It seems that closing the connection immediately will sometimes kill the command
+    Sleep    1s
     SSHLibrary.Close Connection
 
 Run Iperf3 Test Client