JBAS Testsuite: getServerHost() related changes

public class xxTestCase
{
private url = "http" + getServerHost() + .....;
}

needs to be changed to:

public class xxTestCase
{
private url ;

public void setUp()
{
super.setUp();
url = "http" + getServerHost() + ....;
}

Also all the hardcoded "localhost" tests should be replaced with getServerHost