core: Move the session cleaner interceptor to bll

Commit 028ff6 moved the utils library to a JBoss module, but the
application server doesn't load correctly interceptors from these
modules, so the local session cleaner interceptors has to be moved to
the same .jar file containing the intercepted bean, otherwise the
interceptor is ignored.

Change-Id: I553ff3c4dcf0e5b316709cc3974aac26d98706f9
Signed-off-by: Juan Hernandez <juan.hernandez@redhat.com>