Little fixes
* workaround for Infinispan returning the same cache for no-return and force-return caches
* reimplemented some operations that had API throwing UnsupportedOperationExceptions
* added trace logging
Connections limits
SpyMemcached improvements
* implemented Lifecycle, all Memcached 'caches' use shared client
* configurable operation timeout and failure mode
* ignored whitespaces when parsing server list
Added default server configuration to JDG 6.2.x and 6.3.x plugins
Implemented CPU, GC, memory usage and open files monitoring in out-of-JVM services