JDK 9/10 testing

Make sure Weld is able to run our tests and TCK tests in container (with WFLY) and standalone. [This issue does not need to result in a PR directly]

Namely we need to:

• Have all release jobs for Weld 3 in a matrix config for JDK 8 and 10
• Have working PR executors for JDK 8 and 10
  • 10 may be limited right now as spotbugs and other stuff may not work
• Update/align test dependencies to work on JDK 10
• Possibly execute on JDK 10 with --illegal-access=deny

Servlet integration is not a priority here but should get a separate review later on.