Generate report even though JVM is shutting down

[scambon]

When the Maven build is part of a Jenkins job and a timeout occurs, no report is written.
Having the report could help to understand why the built lasted for so long.

It would be great if the extension could try to write the information already available, even though the JVM is forcibly shutting down.
This probably means relying on java.lang.Runtime.addShutdownHook(Thread), i.e. this is on a best effort basis.

In case the build is successful, then there is no need to write the same report twice.