ISPN-2125 Weld SE Integration test

Hi!

Please take a look at https://issues.jboss.org/browse/ISPN-2125 implementation.

I decided to implement this test as a separate module. There are a couple of reasons for that:
1. Within cdi/extension module we have plenty of test producers of EmbeddedCacheManagers. Since we are not using Arquillian we don't control classpath and there is no easy way to ensure we load the correct one.
2. cdi/extension already uses "Weld EE 1.1 - Embedded" Arquillian extension. It is pretty hard (if not impossible) to introduce another "Weld SE 1.1 - Embedded" extension.

Best regards
Sebastian