Make sure we throw an exception if DefaultPlatformManager construction does not success because of createVertxSynchronously(...) fails with an exception or timeout. Before we just returned an not fully initialized Vertx instance which then later may cause a NPE when you act on it. This is related to BZ-432519
Merge pull request #828 from eclipse/npe_eventbus_fix

Make sure we throw an exception if DefaultPlatformManager construction d...