+-r NG-RO/requirements.in
+-r RO-plugin/requirements.in
+-r RO-SDN-arista_cloudvision/requirements.in
+-r RO-SDN-dpb/requirements.in
+-r RO-SDN-dynpac/requirements.in
+-r RO-SDN-floodlight_openflow/requirements.in
+-r RO-SDN-ietfl2vpn/requirements.in
+-r RO-SDN-juniper_contrail/requirements.in
+-r RO-SDN-odl_openflow/requirements.in
+-r RO-SDN-onos_openflow/requirements.in
+-r RO-SDN-onos_vpls/requirements.in
+-r RO-VIM-aws/requirements.in
+-r RO-VIM-azure/requirements.in
+-r RO-VIM-openstack/requirements.in
+-r RO-VIM-openvim/requirements.in
+-r RO-VIM-vmware/requirements.in
+-r RO-VIM-gcp/requirements.in
+
+pyyaml<6