Add diagnostic output IPSupport.printPlatformSupport(System.out) to tests in

java/net/httpclient/whitebox:

java/net/httpclient/whitebox/FramesDecoderTestDriver.java
java/net/httpclient/whitebox/MinimalFutureTestDriver.java
java/net/httpclient/whitebox/Http1HeaderParserTestDriver.java
java/net/httpclient/whitebox/WindowControllerTestDriver.java
java/net/httpclient/whitebox/DelegatingExecutorTestDriver.java
java/net/httpclient/whitebox/RawChannelTestDriver.java
java/net/httpclient/whitebox/SSLFlowDelegateTestDriver.java
java/net/httpclient/whitebox/DefaultProxyDriver.java
java/net/httpclient/whitebox/FlowTestDriver.java
java/net/httpclient/whitebox/ConnectionPoolTestDriver.java
java/net/httpclient/whitebox/AltSvcFrameTest.java
java/net/httpclient/whitebox/SSLTubeTestDriver.java
java/net/httpclient/whitebox/SSLEchoTubeTestDriver.java
java/net/httpclient/whitebox/java.net.http/jdk/internal/net/http/SSLEchoTubeTest.java
java/net/httpclient/whitebox/java.net.http/jdk/internal/net/http/WindowControllerTest.java
java/net/httpclient/whitebox/java.net.http/jdk/internal/net/http/AbstractSSLTubeTest.java
java/net/httpclient/whitebox/java.net.http/jdk/internal/net/http/Http1HeaderParserTest.java
java/net/httpclient/whitebox/java.net.http/jdk/internal/net/http/WrapperTest.java
java/net/httpclient/whitebox/java.net.http/jdk/internal/net/http/ConnectionPoolTest.java
java/net/httpclient/whitebox/java.net.http/jdk/internal/net/http/SelectorTest.java
java/net/httpclient/whitebox/java.net.http/jdk/internal/net/http/HttpClientAccess.java
java/net/httpclient/whitebox/java.net.http/jdk/internal/net/http/FlowTest.java
java/net/httpclient/whitebox/java.net.http/jdk/internal/net/http/frame/FramesDecoderTest.java
java/net/httpclient/whitebox/java.net.http/jdk/internal/net/http/common/DemandTest.java
java/net/httpclient/whitebox/java.net.http/jdk/internal/net/http/common/MinimalFutureTest.java
java/net/httpclient/whitebox/java.net.http/jdk/internal/net/http/SSLFlowDelegateTest.java
java/net/httpclient/whitebox/java.net.http/jdk/internal/net/http/SSLTubeTest.java
java/net/httpclient/whitebox/java.net.http/jdk/internal/net/http/SimpleSSLContext.java
java/net/httpclient/whitebox/java.net.http/jdk/internal/net/http/AuthenticationFilterTest.java
java/net/httpclient/whitebox/java.net.http/jdk/internal/net/http/DefaultProxy.java
java/net/httpclient/whitebox/java.net.http/jdk/internal/net/http/AbstractRandomTest.java
java/net/httpclient/whitebox/java.net.http/jdk/internal/net/http/DelegatingExecutorTest.java
java/net/httpclient/whitebox/java.net.http/jdk/internal/net/http/RawChannelTest.java
java/net/httpclient/whitebox/SelectorTestDriver.java
java/net/httpclient/whitebox/AuthenticationFilterTestDriver.java
java/net/httpclient/whitebox/DemandTestDriver.java
java/net/httpclient/whitebox/AltSvcRegistryTest.java
java/net/httpclient/whitebox/WrapperTestDriver.java