QOS-DB: remove deprecation warning
QOS-DB: remove deprecation warning

Commit 60325f4ae9ec53734d792d111cbcf24270d57417 used the depracted
models_v2.HasId.

Change-Id: I69dcaf740a782a370923e0022607518358456503
Closes-bug: #1620220

igor-toga/local-snat,cloudbase/neutron,igor-toga/local-snat,mahak/neutron,cloudbase/neutron,mahak/neutron,openstack/neutron,openstack/neutron,huntxu/neutron,huntxu/neutron,noironetworks/neutron,openstack/neutron,mahak/neutron,sebrandon1/neutron,sebrandon1/neutron,eayunstack/neutron,noironetworks/neutron,eayunstack/neutron