ISPN-4940 Only include the JCache beans.xml in the embedded uberjar
ISPN-4967 Deprecate ProtobufMetadataManagerMBean.registerProtofiles(String... classPathResources)
ISPN-3938 AdvancedAsyncCacheLoader.process() concurrency issues

Simplify ExecutorAllCompletionService to track the tasks itself instead of
using an ExecutorCompletionService.