Add link for Unset keys and update some links in qos_client
Add link for Unset keys and update some links in qos_client

Change-Id: I3b6f26193c8c7da5c159efe9aa43ab76a51904dc

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