ISPN-4022 M/R: Run the combiner concurrently with the mapper
ISPN-833 Remove cache defined limitation for Infinispan servers

* Asymmetric clusters are now supported.
* It's still convenient to pre-start defined caches so that
topologies for all caches are well defined.
ISPN-3529 Add segment based CH for Hot Rod, and 2.0 protocol support

* Segment based CH implemented in Hot Rod 2.0
* Hash function incremented to 3 to reflect new segment based
calculation for Hot Rod clients.
* All tests should use this version unless they are testing
older versions of the protocol.