ISPN-4900 Split-brain: cancelled ST results in missing data

Reset the rebalance confirmation collector when entering degraded mode
ISPN-4934 Upgrade to protostream-2.0.1.Final
ISPN-4925 Enhance documentation on Spring Integration
ISPN-3625 Updated JCache documentation for latest 1.0.0 API
ISPN-4932 Remove references to Hibernate Search's SearchFactory from public API
ISPN-4873 Statetransfer thread pool deadlock

StateRequestCommands should not block a thread
if they arrive before the REBALANCE_START command.
ISPN-4931 Update Getting Started guide for Infinispan 7
'Release Script: update versions for 7.0.1-SNAPSHOT'
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