Expiring Large Objects doesn't clean up segments

[clayg]

When creating a Large Object with an expirer header the user should expect that all of the segments (and not just the manifest) are expired according to the requested header:

vagrant@saio:/vagrant/.scratch$ swift upload test testme.builder -H 'x-delete-after: 10' --use-slo -S 1048576 -H 'x-delete-after: 10'
testme.builder segment 2
testme.builder segment 0
testme.builder segment 1
testme.builder

^ object and segments are uploaded with x-delete-after but only manifest gets the expire header

vagrant@saio:/vagrant/.scratch$ swift list test_segments
testme.builder/slo/1443074688.000000/2102625/1048576/00000000
testme.builder/slo/1443074688.000000/2102625/1048576/00000001
testme.builder/slo/1443074688.000000/2102625/1048576/00000002
vagrant@saio:/vagrant/.scratch$ swift stat -v test_segments testme.builder/slo/1443074688.000000/2102625/1048576/00000000
           URL: http://saio:8080/v1/AUTH_test/test_segments/testme.builder/slo/1443074688.000000/2102625/1048576/00000000
    Auth Token: AUTH_tka346244746174116b29936113b950298
       Account: AUTH_test
     Container: test_segments
        Object: testme.builder/slo/1443074688.000000/2102625/1048576/00000000
  Content Type: application/octet-stream
Content Length: 1048576
 Last Modified: Mon, 09 Nov 2015 22:04:06 GMT
          ETag: cd777a16f7290910ee21c32a3b7582cc
 Accept-Ranges: bytes
   X-Timestamp: 1447106645.10095
    X-Trans-Id: tx4ae8960d734a450194b0c-0056411867
vagrant@saio:/vagrant/.scratch$ swift stat -v test testme.builder
Object HEAD failed: http://saio:8080/v1/AUTH_test/test/testme.builder 404 Not Found

^ manifest is 404'd but segments remain