Started abstracting common model tests.
Started abstracting common model tests.

apoorvemohan/haas,henn/hil,meng-sun/hil,henn/hil,kylehogan/hil,henn/haas,CCI-MOC/haas,henn/hil_sahil,kylehogan/haas,lokI8/haas,SahilTikale/haas,SahilTikale/switchHaaS,apoorvemohan/haas,henn/hil_sahil,kylehogan/hil,meng-sun/hil