8173315: java/net/HttpURLConnection/SetAuthenticator/HTTPSetAuthenticatorTest.java fails intermittently
Summary: Ensure that each test case creates a new server with a new local port number to preserve test isolation.
Reviewed-by: michaelm

8169495: Add a method to set an Authenticator on a HttpURLConnection.
Summary: new public method java.net.HttpURLConnection::setAuthenticator allows to specify an authenticator to use with a given connection.
Reviewed-by: chegar