Update to latest version of Netty and make necessary changes.
Add an "attachment" to the HTTP request and response objects when the
adapter is used, that the adapter implementation may set and pass on
to the script code.
Add remote and local socket addresses to "socket" in HTTP adapter.
Fix HTTP adapter and Netty to use same TLS context setup as regular
TLS module. Re-enable some disabled tests.
Fix possible NPE in address handling.