ISPN-3290 Redesign CacheStore API

* removed migration tools (outdated)

ISPN-3290 Redesign CacheStore API

* removed pre 6.0 parsers and config files

ISPN-3290 Redesign CacheStore API

* removed existing SPI and store support classes: bucket based, lock support

ISPN-3290 Redesign CacheStore API

* new loader/writer SPI

ISPN-3290 Redesign CacheStore API

* implemented the cache store chaining logic

ISPN-3290 Redesign CacheStore API

* updated configuration

ISPN-3290 Redesign CacheStore API

* SingleFileCacheStore migration

ISPN-3290 Redesign CacheStore API

* migrate the JDBC cache store

ISPN-3290 Redesign CacheStore API

* removed old adaptor classes

ISPN-3290 Redesign CacheStore API

* migrate lucene loaders

ISPN-3290 Redesign CacheStore API

* migrate JCache adapters

ISPN-3290 Redesign CacheStore API

* migrate the remote cache store

ISPN-3290 Redesign CacheStore API

* migrated the cluster store

ISPN-3290 Redesign CacheStore API

* bug fix: for named components (the marshaller) it wrongly considered it as a global component

ISPN-3290 Redesign CacheStore API

* fixed tests and code scrubbing

ISPN-3290 Redesign CacheStore API

Answered the review comments
* fixed spelling error
* improved javadoc
* InitializationContext.getConfiguration is generic now to avoid casts

ISPN-3290 Redesign CacheStore API

* fixed race condition in async cache store

ISPN-3290 Redesign CacheStore API

* fixed test timing out due to marshaller being created on every request