Add FreeBSD compatibility

openssh/init.sls

 {% from "openssh/map.jinja" import openssh with context %}
 
 openssh:
+  {% if openssh.server is defined %}
   pkg.installed:
     - name: {{ openssh.server }}
+  {% endif %}
   service.running:
     - enable: True
     - name: {{ openssh.service }}
+  {% if openssh.server is defined %}
     - require:
       - pkg: {{ openssh.server }}
+  {% endif %}

openssh/map.jinja

         'banner': '/etc/ssh/banner',
         'banner_src': 'salt://openssh/files/banner',
     },
+	'FreeBSD': {
+		'service': 'sshd',
+		'sshd_config': '/etc/ssh/sshd_config',
+		'sshd_config_src': 'salt://openssh/files/sshd_config',
+		'banner': '/etc/ssh/banner',
+		'banner_src': 'salt://openssh/files/banner',
+	}
 }, merge=salt['pillar.get']('openssh:lookup')) %}