Description of problem:
python-cryptography 0.13 was recently built for F24 and rawhide.

This is breaking pyOpenSSL due to a way in which the key is read:
https://github.com/pyca/cryptography/issues/2837

Can you please update to pyOpenSSL 0.16 which fixes this.

Version-Release number of selected component (if applicable):
python-cryptography -> 1.3.1-1.fc25 and 1.3.1-1.fc24
pyOpenSSL 0.15.1-3.fc24  (and 0.15 in rawhide)

How reproducible:
Always (upstream bug)


Steps to Reproduce:
1. Attempt to access a key type in pyOpenSSL

Actual results:
======================================================================
ERROR: test_valid_true (certbot.tests.crypto_util_test.ValidPrivkeyTest)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/builddir/build/BUILD/certbot-38d7503f0f27686997ece77a25834f6387f47e47/certbot/tests/crypto_util_test.py", line 162, in test_valid_true
    self.assertTrue(self._call(RSA256_KEY))
  File "/builddir/build/BUILD/certbot-38d7503f0f27686997ece77a25834f6387f47e47/certbot/tests/crypto_util_test.py", line 159, in _call
    return valid_privkey(privkey)
  File "/builddir/build/BUILD/certbot-38d7503f0f27686997ece77a25834f6387f47e47/certbot/crypto_util.py", line 200, in valid_privkey
    OpenSSL.crypto.FILETYPE_PEM, privkey).check()
  File "/usr/lib/python2.7/site-packages/OpenSSL/crypto.py", line 243, in check
    if _lib.EVP_PKEY_type(self._pkey.type) != _lib.EVP_PKEY_RSA:
AttributeError: '_cffi_backend.CDataGCP' object has no attribute 'type'


Expected results:
Acquire key type

Additional info:
Upstream python-cryptography issue: https://github.com/pyca/cryptography/issues/2837
Upstream pyOpenSSL issue: https://github.com/pyca/pyopenssl/issues/407