Multi daemon support, backup sshd config, updated sshd config items, Ubuntu 18 support
Quite a large change in the internals, so bumping to the minor rev.
#89 Adds the ability to install multiple systemd unit files and so manage multiple sshd daemons. It also exposes a number of previously internal variables so the location of the sshd binary, config file and so on can be controlled from the calling play. See sshd_install_service
and Secondary role variables in the README.md for more information. Stirling work by @tterranigma.
#84 adds sshd_backup, which when set to true will backup the sshd config. Thanks to @easonand
#87 Fixes a long standing bug with sshd_match variable being reused and adds new sshd options as well as improvement to the CI tests. Thanks to @pillarsdotnet
#88 Addes Ubuntu 18 defaults, copied from the defaults for 16. Thanks to @dduong42