pypy failure fix on fastbinary import with "AttributeError"

[frail]

we hit this bug when we are using this library with pypy:

Traceback (most recent call last):
File "/venv/pypy/site-packages/commons/app.py", line 251, in run
main()
File "/repo/start.py", line 14, in start_daemon
import configuration
File "/repo/configuration.py", line 14, in
from pyes import ES
File "/venv/pypy/site-packages/pyes/init.py", line 26, in
from .es import ES, file_to_attachment
File "/venv/pypy/site-packages/pyes/es.py", line 41, in
from .connection import connect as thrift_connect
File "/venv/pypy/site-packages/pyes/connection.py", line 12, in
from .pyesthrift import Rest
File "/venv/pypy/site-packages/pyes/pyesthrift/Rest.py", line 9, in
from .ttypes import *
File "/venv/pypy/site-packages/pyes/pyesthrift/ttypes.py", line 12, in
from thrift.protocol import fastbinary
AttributeError: 'module' object has no attribute 'cStringIO_CAPI'

we assumed that the bug is due to this issue in pypy:

https://bitbucket.org/pypy/pypy/issues/875/thrift-installation-error-cstringioh