Added test for HR RollingUpgrades of diff server versions

new package for specific rolling upgrades tests

specific rollups tests excluded from main test run
Asymmetric cluster test
ISPN-3712 Use 5.2.x compatibility layer to support rolling upgrades involving ByteArrayKeys
ISPN-3705 Update the ChannelProvider against the changes introduced in ISPN-3697
Fix failing tests which refer to the now missing FileCacheStore
ISPN-3710 Upgrade to Protostream 1.0.0.CR1
ISPN-3534 Investigate performance regressions in Infinispan 6.0.0

Set the default UFC.max_credits and MFC.max_credits to 2M, which is also
the JGroups default.
ISPN-3708 For HotRod make the default cache the cache specified as default in the
          container definition of the Infinispan subsystem
Merge branch 'master' of https://github.com/infinispan/infinispan-server
accepted changes from upstream
Add rest security tests
Merge branch 'master' of git://github.com/chepa653/infinispan-server into chepa653-master