Ensure that ssh is installed (#774)

Signed-off-by: Sevan Murriguian-Watrin <[email protected]>

roles/ssh_hardening/vars/OpenBSD.yml

@@ -1,4 +1,8 @@
 ---
+# It seems that OpenBSD comes with openssh in the base install so we can't
+# really install it as a separated package. Feel free to patch this if it's
+# not the expected way to handle that on OpenBSD
+ssh_pkgs: []
 sshd_path: /usr/sbin/sshd
 ssh_host_keys_dir: /etc/ssh
 sshd_service_name: sshd