JERSEY-2616: AsyncResponse and ChunkedOutput handlers called repeatedly

 - fixed resume of suspended continuation with complete call (which doesn't redispatch repeatedly)
 - reproducible test-case

Change-Id: Ica1988f79be6745092e7082c80b410e7d620ed94
Signed-off-by: Michal Gajdos <michal.gajdos@oracle.com>