Change build_cloud completion check. Used to wait for cloud_size=expected size plus consensus, from all nodes.
Now wait for that from one node, and check that all nodes agree. Fail if any node disagrees after the first node says cloud_size is expected plus consensus.

I ran some large count local multi-jvm and this seemed okay. If you see a message about cloud size being wrong, then this relaxed rule may not be sufficient.
Merge branch 'master' of github.com:0xdata/h2o