Also run pypy3 tests using python setup.py test for consistency with other test targets.
Also run pypy3 tests using python setup.py test for consistency with
other test targets.

mistio/libcloud,ByteInternet/libcloud,Kami/libcloud,andrewsomething/libcloud,ByteInternet/libcloud,apache/libcloud,apache/libcloud,ByteInternet/libcloud,mistio/libcloud,Kami/libcloud,mistio/libcloud,andrewsomething/libcloud,Kami/libcloud,apache/libcloud,andrewsomething/libcloud