Update documentation acording to last QoS/OvS changes
Update documentation acording to last QoS/OvS changes

Change Ie802a235ae19bf679ba638563ac7377337448f2a introduces
a few changes to the low level ovs implementation of QoS,
this patch updates documentation.

Change-Id: I46a972b045c03f65888a22f55e893c69da3db14b
Partially-Implements: ml2-qos

noironetworks/neutron,SamYaple/neutron,openstack/neutron,apporc/neutron,javaos74/neutron,javaos74/neutron,apporc/neutron,klmitch/neutron,mmnelemane/neutron,yanheven/neutron,openstack/neutron,takeshineshiro/neutron,wolverineav/neutron,eayunstack/neutron,cloudbase/neutron,neoareslinux/neutron,igor-toga/local-snat,mattt416/neutron,silenci/neutron,yanheven/neutron,jumpojoy/neutron,jacknjzhou/neutron,vivekanand1101/neutron,mahak/neutron,dhanunjaya/neutron,noironetworks/neutron,skyddv/neutron,glove747/liberty-neutron,asgard-lab/neutron,barnsnake351/neutron,dims/neutron,SamYaple/neutron,dims/neutron,sasukeh/neutron,klmitch/neutron,chitr/neutron,shahbazn/neutron,adelina-t/neutron,jacknjzhou/neutron,huntxu/neutron,dhanunjaya/neutron,sebrandon1/neutron,glove747/liberty-neutron,bigswitch/neutron,bigswitch/neutron,mahak/neutron,JianyuWang/neutron,openstack/neutron,silenci/neutron,JianyuWang/neutron,asgard-lab/neutron,wolverineav/neutron,shahbazn/neutron,swdream/neutron,vivekanand1101/neutron,skyddv/neutron,sebrandon1/neutron,swdream/neutron,sasukeh/neutron,MaximNevrov/neutron,eayunstack/neutron,mmnelemane/neutron,MaximNevrov/neutron,huntxu/neutron,neoareslinux/neutron,jumpojoy/neutron,mattt416/neutron,chitr/neutron,takeshineshiro/neutron,mahak/neutron,barnsnake351/neutron,igor-toga/local-snat,cloudbase/neutron,adelina-t/neutron