update requirements to add subunit and testrepository libraries
update requirements to add subunit and testrepository libraries

dklyle/stackviz-ng,openstack/stackviz,timothyb89/stackviz-ng,openstack/stackviz,dklyle/stackviz-ng,timothyb89/stackviz,timothyb89/stackviz-ng,timothyb89/stackviz,openstack/stackviz,timothyb89/stackviz,timothyb89/stackviz-ng