[WIP] Refactor with new service and event manager

[ezimuel]

This PR contains the refactoring of zend-cache using the new zend-servicemanager and zend-eventmanager of ZF3.

NOTE: this PR is a work in progress, please don't merge!

To do:

• Fix the usage in unit tests of the removed functions getEvents() and getListeners() from EventManger;
• Fix the unit test;

[ezimuel]

@weierophinney I solved all the error in the unit tests except for this one:

1) ZendTest\Cache\Service\StorageCacheAbstractServiceFactoryTest::testCanRetrieveCacheByName
Zend\ServiceManager\Exception\ServiceNotCreatedException: Service with name "Foo" could not be created. Reason: Plugin of type "Zend\Cache\Storage\Plugin\Serializer" already registered

zend-cache/vendor/zendframework/zend-servicemanager/src/ServiceManager.php:566
zend-cache/vendor/zendframework/zend-servicemanager/src/ServiceManager.php:181
zend-cache/test/Service/StorageCacheAbstractServiceFactoryTest.php:64

Caused by
Zend\Cache\Exception\LogicException: Plugin of type "Zend\Cache\Storage\Plugin\Serializer" already registered

zend-cache/src/Storage/Adapter/AbstractAdapter.php:279
zend-cache/src/StorageFactory.php:122
zend-cache/src/Service/StorageCacheAbstractServiceFactory.php:58
zend-cache/vendor/zendframework/zend-servicemanager/src/ServiceManager.php:559
zend-cache/vendor/zendframework/zend-servicemanager/src/ServiceManager.php:181
zend-cache/test/Service/StorageCacheAbstractServiceFactoryTest.php:64

Can you have a look? Thanks.

[weierophinney]

One quick comment: zend-mvc standardizes on config (all lowercase) for the configuration service. I'm updating that locally as I investigate the errors and failures.

[weierophinney]

Ugh - found another slight BC break in SM v3: this becomes $sharedByDefault (note shared vs share). That change fixes a few errors.