Temporarily disable REST security integration tests until  ISPN-4407
ISPN-4412 Fix failing embedded security integration tests
ISPN-4415 Provide correct Managed executor facade and fix XSLT

* Correct executor thread factories needed to be provided according
to the executor being plugged. Scheduled ones need a different facade.
* Fix an XSLT issue so that custom Hot Rod endpoints are added
correctly.
ISPN-4413 PAX URL temporary files fill /tmp and cause issues on CI
ISPN-4391 Test Security features in a cluster
- Do not reuse a transport when read()ing a new global configuration
- Add StateTransferManagerImpl.toString() to ease debugging
- Make the TestPrincipal serializable
ISPN-4382 Lightweight security framework
ISPN-4056 Cache masks in the cluster registry
ISPN-4383 ClusterRoleMapper
ISPN-4392 Improved declarative role mapper configuration
ISPN-4382 Update server to use the lightweight security
ISPN-4264 CLI Roles Grant + Deny
ISPN-4406 Security integration tests should run sequentially

* This is because tests rely on static field initialisation.
* To support this, test cache manager factory must be able to cope with
checking if the cache is closed even if it's unauthorised.
ISPN-4405 Remove unnecessary Lucene dependencies causing build halt
ISPN-4417 Adjust embbeded security IT to lightweight security
ISPN-4419 Upgrade to netty 4.0.20.Final and use provided DefaultThreadFactory for max perf
ISPN-4420 Allow configuring keepalive for hotrod connections
ISPN-4400 Takes a long time to start up all clusters which has a lot of segments

This is mainly caused by the myriad of internal copies performed by the CopyOnWriteArraySet used in InboundTransferTask for tracking the segments being requested during ST. This collection is updated way too frequently if we have a large number of segments. It seems that using a simple HashMap and doing external synchronization works better both in terms of time and memory.