* Integrating openssh module utils with openssh_keypair
* Added explicit PEM formatting for OpenSSH < 7.8
* Adding changelog fragment
* Adding OpenSSL/cryptography dependency for integration tests
* Adding private_key_format option and removing forced cryptography update for CI
* Fixed version check for bcrypt and key_format option name
* Setting no_log=False for private_key_format
* Docs correction and simplification of control flow for private_key_format
Ajpantuso