roles/sshd: Configure OpenSSH daemon

The *sshd* role can be used to configure the OpenSSH daemon. It supports
configuring a few options globally, as well as a limited set of options
in `Match` blocks (e.g. per-user/group configuration).

roles/sshd/tasks/main.yml

@@ -0,0 +1,6 @@
+- name: ensure sshd is configured
+  template:
+    src=sshd_config.j2
+    dest=/etc/ssh/sshd_config
+    mode=0600
+  notify: restart sshd