DeployCacheHandlerTest NPE due to server resourse cleanup

> Andy: deployCacheHandlerTest - I have always gotten the 4 NPEs -
>> NPE in TestNoDoubleUpdateCheck,
>> NPE in TestNoUpdateCheckOnPendingBackgroundUpdate
>> NPE in TestUpdateCheckForFirstAccess, and
>> NPE in testUpdateCachingClientCodeDirectURLAccess
>> all these are caused by setupServer failing and setting server=null after getting the exception:
>> java.net.BindException: Address already in use: bind
>> problem is that each of the test try to setup the server, and none of them try to clean up.
>>
>> Set server to null bypass server.shutDown() when tearDown(). Should replace this pattern/method
>>
>> private boolean setupServer(HttpHandler handler) {
>>
>> try {
>> //setup own http server that
>> server = new WebServer(port, handler);
>> server.start();
>> ....
>>
>> by simply calling WebServer.startServer() in setUp()
>>
>> protected void setUp() throws Exception {
>> super.setUp();
>> server = WebServer.startServer();
>> }