Enable debugging URL redirection issues

[philipwhiuk]

If publishing to a URLRepository fails due to an error - e.g:

java.net.ProtocolException: Server redirected too many  times (20)
[error] 	at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
[error] 	at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:[77](https://git.flextrade.com/FIXHub/ioi-common/-/jobs/1327853#L77))
[error] 	at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
[error] 	at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499)
[error] 	at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:480)
[error] 	at java.base/sun.net.www.protocol.http.HttpURLConnection$10.run(HttpURLConnection.java:2057)
[error] 	at java.base/sun.net.www.protocol.http.HttpURLConnection$10.run(HttpURLConnection.java:2052)
[error] 	at java.base/java.security.AccessController.doPrivileged(AccessController.java:569)
[error] 	at java.base/sun.net.www.protocol.http.HttpURLConnection.getChainedException(HttpURLConnection.java:2051)
[error] 	at java.base/sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1609)
[error] 	at java.base/sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1589)
[error] 	at java.base/sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:224)
[error] 	at org.apache.ivy.util.url.BasicURLHandler.upload(BasicURLHandler.java:288)
[error] 	at org.apache.ivy.util.url.URLHandlerDispatcher.upload(URLHandlerDispatcher.java:[82](https://git.flextrade.com/FIXHub/ioi-common/-/jobs/1327853#L82))
[error] 	at org.apache.ivy.util.FileUtil.copy(FileUtil.java:150)
[error] 	at org.apache.ivy.plugins.repository.url.URLRepository.put(URLRepository.java:84)

it is very difficult to diagnose what SBT Ivy is doing exactly.

For example:

• https://stackoverflow.com/questions/74856628/java-net-protocolexception-server-redirected-too-many-times-20-when-publishin

It would be nice if it were possible to turn on debug logging that provided the URL(s) it was trying to publish to:

For example here:

• ivy/src/java/org/apache/ivy/plugins/repository/url/URLRepository.java

  Line 84 in 396a783

  FileUtil.copy(source, new URL(destination), progress);

or:

• ivy/src/java/org/apache/ivy/util/url/BasicURLHandler.java

  Line 249 in 396a783

  public void upload(File source, URL dest, CopyProgressListener l) throws IOException {