Moving HttpTester to "tests" scoped jetty-http artifact.
+ HttpTester, a testing class, was used by jetty-servlets,
embedded-jetty-examples, and test-integration, all from
those testing scopes. Moved the HttpTester into the
pre-existing jetty-http "tests" classified artifact.
Moving ServletTester to "tests" scoped jetty-servlet artifact.
+ ServletTester, a testing class, was used by jetty-servlets,
test-integration, and test-jetty-webapp. This move puts
this class in the pre-existing jetty-servlet "tests" classified
artifact.