com/sun/jdi tests fail due to network issues on OSX 10.15

There are two com/sun/jdi tests failing the JDK15 CI due to network
issues with macOS 10.15:

com/sun/jdi/JdwpListenTest.java
com/sun/jdi/JdwpAttachTest.java

failed due to network issues:

---------System.err:(27/1689)---------
java.lang.RuntimeException: ERROR: failed to attach
at JdwpListenTest.listenTest(JdwpListenTest.java:110)
at JdwpListenTest.main(JdwpListenTest.java:71)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:564)
at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:127)
at java.base/java.lang.Thread.run(Thread.java:832)
Caused by: java.net.NoRouteToHostException: No route to host
at java.base/sun.nio.ch.Net.connect0(Native Method)
at java.base/sun.nio.ch.Net.connect(Net.java:515)
at java.base/sun.nio.ch.Net.connect(Net.java:504)
at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:588)
at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:333)
at java.base/java.net.Socket.connect(Socket.java:648)
at jdk.jdi/com.sun.tools.jdi.SocketTransportService.attach(SocketTransportService.java:261)
at jdk.jdi/com.sun.tools.jdi.GenericAttachingConnector.attach(GenericAttachingConnector.java:119)
at jdk.jdi/com.sun.tools.jdi.SocketAttachingConnector.attach(SocketAttachingConnector.java:83)
at JdwpListenTest.attach(JdwpListenTest.java:200)
at JdwpListenTest.listenTest(JdwpListenTest.java:103)
... 7 more

JavaTest Message: Test threw exception: java.lang.RuntimeException: ERROR: failed to attach
JavaTest Message: shutting down test

STATUS:Failed.`main' threw exception: java.lang.RuntimeException: ERROR: failed to attach
---------rerun:(37/6009)*---------

The sun/management tests previously listed here have been moved to JDK-8241865.