adds list_nodes to api
adds list_nodes to api

CCI-MOC/haas,kylehogan/hil,meng-sun/hil,henn/hil,SahilTikale/haas,henn/hil,kylehogan/hil,henn/hil_sahil,henn/hil_sahil,meng-sun/hil,kylehogan/haas,henn/haas