Specify the service name for ssh

Current code was asking for service 'openssh' which does not exist. It is 'ssh'. Specifying a name in the `service.running` block fixes this.

openssh/init.sls

@@ -6,6 +6,7 @@ openssh:
     {% endif %}
   service.running:
     - enable: True
+    - name: ssh
     - require:
       - pkg: openssh
       - file: sshd_banner