Fixed unittest warnings with Python 3: assertEquals() is deprecated.
Fixed unittest warnings with Python 3: assertEquals() is deprecated.

defunkt/pystache,rismalrv/pystache,charbeljc/pystache,harsh00008/pystache,nitish116/pystache,arlenesr28/pystache,beni55/pystache,harsh00008/pystache,beni55/pystache,jrnold/pystache,jrnold/pystache,charbeljc/pystache,harsh00008/pystache,rismalrv/pystache,rismalrv/pystache,nitish116/pystache,arlenesr28/pystache,nitish116/pystache,arlenesr28/pystache