Brooklyn node and cluster upgrade

Merges #266 (cluster upgrade) with work I've been doing on node upgrade.

Builds on #260 so please ensure that is merged first.

Needs further testing (by me at this point) but wanted to push it in case @neykov you have comments, especially on the last commit.
Not sure I follow. Seems like a circular argument that `CollectionFunctionals.quorum` has been added, which uses `QuorumCheck`. That `quorum` method could have been added anywhere we chose.