Change prefix for namespace fixture
Change prefix for namespace fixture

With fullstack in game namespace fixtures are not used only in
functional tests. This patch changes prefix to be "test-" instead of
"func-" to describe better its purpose.

Change-Id: Ie9a22f51dbd45247550d7cd538339ba199d93c26

klmitch/neutron,bigswitch/neutron,JianyuWang/neutron,skyddv/neutron,apporc/neutron,eayunstack/neutron,paninetworks/neutron,jacknjzhou/neutron,dims/neutron,sebrandon1/neutron,suneeth51/neutron,glove747/liberty-neutron,cloudbase/neutron,klmitch/neutron,cisco-openstack/neutron,silenci/neutron,openstack/neutron,bigswitch/neutron,cisco-openstack/neutron,mahak/neutron,chitr/neutron,neoareslinux/neutron,javaos74/neutron,dims/neutron,glove747/liberty-neutron,chitr/neutron,paninetworks/neutron,MaximNevrov/neutron,shahbazn/neutron,barnsnake351/neutron,yanheven/neutron,swdream/neutron,noironetworks/neutron,jumpojoy/neutron,openstack/neutron,huntxu/neutron,MaximNevrov/neutron,JianyuWang/neutron,wolverineav/neutron,mattt416/neutron,jumpojoy/neutron,igor-toga/local-snat,vivekanand1101/neutron,igor-toga/local-snat,mattt416/neutron,shahbazn/neutron,SamYaple/neutron,swdream/neutron,apporc/neutron,takeshineshiro/neutron,vivekanand1101/neutron,skyddv/neutron,noironetworks/neutron,barnsnake351/neutron,yanheven/neutron,neoareslinux/neutron,cloudbase/neutron,mahak/neutron,eayunstack/neutron,sebrandon1/neutron,mmnelemane/neutron,SamYaple/neutron,mmnelemane/neutron,adelina-t/neutron,jacknjzhou/neutron,sasukeh/neutron,watonyweng/neutron,adelina-t/neutron,mahak/neutron,watonyweng/neutron,openstack/neutron,asgard-lab/neutron,huntxu/neutron,takeshineshiro/neutron,dhanunjaya/neutron,suneeth51/neutron,silenci/neutron,dhanunjaya/neutron,javaos74/neutron,sasukeh/neutron,asgard-lab/neutron,wolverineav/neutron