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.