See jsr107 annotation support utilized in CustomerService

Also see basic test case that shows the following:

• use of jsr 107 cache interface
• asserts that the jsr107 @cache annotations are being utilized. Note that JSR107 annotation requires support from a DI framework such as Spring. See JCacheAppConfig that sets up spring context for JSR 107 annotations
• jsr107 cache statistics Mbean is registered
• , and obviously that the jsr107 caching provider in this test case is indeed EhCache :)