Feature Request: Support for `key` directive in chrony.conf

[GianniBYoung]

I need to be able to configure servers with the key field

# /etc/chrony.conf
server <hostname> key <keyid> maxpoll 10

In order to do this currently I need to pass the server configure via custom settings:

timesync_chrony_custom_settings:
  - "server <hostname> key <keyid> maxpoll 10"

And I also need to push the key files to keyfile /etc/chrony.keys via a custom task.

# /etc/chrony.keys
<keyid> <hashing algorithm> <password hash>
25 SHA1 HEX:1dc764e0791b11fa67efc7ecbc4b0d73f68a070c

I would like to be able to handle this scenario natively with the role configuration