Add nosehtmloutput as a test dependency.
Add nosehtmloutput as a test dependency.

Adding nosehtmloutput as a test dependency allows nose to output its
results to an html file. This will be used by Jenkins to save logs on
a different server.

Change-Id: If88ca04bf7e45aa25aaea3cc01bb0f457224c117

gotostack/neutron-lbaas,flavio-fernandes/networking-odl,gandelman-a/neutron-lbaas,flavio-fernandes/networking-odl,FedericoRessi/networking-odl,openstack/neutron-vpnaas,CiscoSystems/networking-odl,schoksey/networking-odl,openstack/networking-odl,openstack/neutron-vpnaas,dougwig/x-neutron-lbaas,gaolichuang/neutron-fwaas,schoksey/networking-odl,openstack/networking-odl,gandelman-a/neutron-lbaas,citrix-openstack-build/neutron-lbaas,citrix-openstack-build/neutron-vpnaas,FedericoRessi/networking-odl,dougwig/x-neutron-fwaas,openstack/neutron-fwaas,dougwig/x-neutron-vpnaas,openstack/networking-odl,mestery/x-stackforge-odl,citrix-openstack-build/neutron-fwaas,gotostack/neutron-lbaas,CiscoSystems/networking-odl,openstack/neutron-fwaas,gandelman-a/neutron-lbaas,gaolichuang/neutron-fwaas,gotostack/neutron-lbaas