Deal with thrift 0.11 incompatibility

tests pass on 0.10

tests fail on 0.11 due to code not in our direct control
```
../../../virtualenv/python3.6.3/lib/python3.6/site-packages/sqlalchemy/engine/default.py:410: in connect
return self.dbapi.connect(*cargs, **cparams)
pyhive/hive.py:64: in connect
return Connection(*args, **kwargs)
pyhive/hive.py:162: in __init__
self._transport.open()
../../../virtualenv/python3.6.3/lib/python3.6/site-packages/thrift_sasl/__init__.py:67: in open
if not self._trans.is_open():
E AttributeError: 'TSocket' object has no attribute 'is_open'
```