Additional methods into knownBLockingMethods to match classes of JDK-11

[jtulach]

While investigating Enso parser performance I needed to filter out many idle threads. Rather than doing that manually I decided to update the knownBLockingMethods of NetBeans profiler.

Test with sample .npss file attached.

[matthiasblaesing]

Looks sane to me - in the test the InputStream in loadSnapshot is not closed correctly, but that should not be a problem for a test.

[mbien]

even though it might not make a difference in practice, I believe it would be better to close that stream anyway, otherwise code scans will pick that up every time and it would add to the noise.

[ebarboni]

Sorry being late on this. I've recently splitted the netbeans-license job into two jobs the
netbeans-apisigcheck for sig test (that are always unstable)
netbeans-license to do basicaly the rat check verify-libs-and-licenses. so netbeans-license job should be green if we are good.

the npss is not handled so far, we should handle that.