The following parameters override the default settings for the browser, platform, and environment:

// suite xml file

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE suite SYSTEM "http://testng.org/testng-1.0.dtd">

<suite name="My_Test_Suite" preserve-order="true" parallel="false" thread-count="1" verbose="2">
    <test name="My Test">
        <parameter name="browser" value="chrome" />
        <parameter name="platform" value="Linux" />
        <parameter name="environment" value="remote" />

        <packages>
            <package name="my.tests.*" />
        </packages>
    </test>
</suite>