Add test_common.py
Add test_common.py

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