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-3530 Start Hot Rod 2.0 protocol adding segment-based CH

* Added version 2.0 of the Hot Rod protocol
* All tests should use this version unless they are testing
older versions of the protocol.
* Added initial segment-based CH support in Hot Rod protocol