* Remove Ubuntu 16.04 (Xenial Xerus) from CI.
* Removing PyOpenSSL backend from everywhere but openssl_pkcs12.
* Remove PyOpenSSL support from module_utils that's not needed for openssl_pkcs12.
* Add changelog fragment.
* Add diff support to openssl_privatekey.
* Add diff support to openssl_csr.
* Add diff support to x509_crl.
* Add diff support to x509_certificate.
* Add diff support to openssl_publickey.
* Add changelog fragment.
* Prefer one fingerprint for diff infos to reduce noise.
* Apply suggestions from code review
Co-authored-by: Ajpantuso <ajpantuso@gmail.com>
Co-authored-by: Ajpantuso <ajpantuso@gmail.com>