Fix subunit describe calls utility document warnings
Fix subunit describe calls utility document warnings

This commit fixes subunit describe calls utility document warnings
below.

 WARNING: Definition list ends without a blank line; unexpected
          unindent.

Change-Id: Ife47a85446f49cd0de6bf7af3381d1a28e4311d0

openstack/tempest,cisco-openstack/tempest,Tesora/tesora-tempest,sebrandon1/tempest,Juniper/tempest,Tesora/tesora-tempest,masayukig/tempest,openstack/tempest,vedujoshi/tempest,vedujoshi/tempest,Juniper/tempest,sebrandon1/tempest,cisco-openstack/tempest,masayukig/tempest