Tim Burke 5b30c1f811 Fix flakey test_check_delete_headers_sets_delete_at
It was rare (saw it once in 10k runs running locally), but it's
ocassionally blown up in the gate [1]. With this, no fails locally even
after 100k runs.

[1] http://logs.openstack.org/11/538011/3/gate/swift-tox-py27/06c06f0/job-output.txt.gz#_2018-02-07_03_29_09_578389

Change-Id: I7701d2db2ec82b48559c5b74a2e08c4403fd5dec
Related-Change: Ia126ad6988f387bbd2d1f5ddff0a56d457a1fc9b
2018-02-07 05:50:12 +00:00
..
2017-05-11 01:39:14 -06:00