* Removed required_together, updated tests
Since required_together: privatekey_path -> friendly_name, is not always
required it has been removed.
Updated openssl_pkcs12 integration tests to be in line with other
openssl_* modules, and added a test for export with no privatekey_path.
* linter fixes
* Removed cryptography from tests
* Added changelog fragment
* Removed non-necessary select_crypto_backend
