radosgw-admin: Bug fixes for issue 4251.
radosgw-admin: Bug fixes for issue 4251.

Fixes errors introduced by d44fb14762c3d7e2853a8e4be012cd8e4557124e.

Signed-off-by caleb.miles <caleb.miles@inktank.com>

ktdreyer/teuthology,michaelsevilla/teuthology,ceph/teuthology,dmick/teuthology,dreamhost/teuthology,ceph/teuthology,ivotron/teuthology,t-miyamae/teuthology,robbat2/teuthology,dmick/teuthology,SUSE/teuthology,michaelsevilla/teuthology,SUSE/teuthology,dmick/teuthology,tchaikov/teuthology,zhouyuan/teuthology,ivotron/teuthology,ktdreyer/teuthology,yghannam/teuthology,t-miyamae/teuthology,tchaikov/teuthology,zhouyuan/teuthology,SUSE/teuthology,caibo2014/teuthology,caibo2014/teuthology,dreamhost/teuthology,yghannam/teuthology,robbat2/teuthology