<PARAMS>
    <testcases> 1,2 </testcases>
    <mail> paxweb@paxterrasolutions.com </mail>
    #'log_dir' = '/home/user/Desktop/openflow_logs/'
    <CASE1>
        <STEP1>
            <host> h2 </host>
        </STEP1>
    </CASE1>
    <CASE2>
        <STEP1>
            <host> h3 </host>
         </STEP1>
    </CASE2>
</PARAMS>