Support OpenSSH 8.6; fix variable usage

Fix variable precedence when invoked through roles

Make vars defined in vars/*.yml private to the role and
denote by double underscore __.

Test invocation through role

Avoid comparison with true value in templates

Update configuration options list for OpenSSH 8.6

Fix lint issues; support EL 9 managed hosts

Fix lint issues

support EL 9 managed hosts

Initial release

Initial release