Comment 8 for bug 1537811

If tempest will allow a missing content-length:
https://bugs.launchpad.net/tempest/+bug/1536251

Then what is the potential harm?

Also:
- radosgw already removed the content-length for 204 (See: https://github.com/ceph/ceph/commit/4e5921dbc7d1c51feb4cc5c03aa59a432742765e )
- mod_proxy in Apache removes content-length for 204