samba-dc: Monitor processes with collectd

Monitor the state of Samba server processes via the *processes* plugin
for *collectd*.

group_vars/samba-dc.yml

@@ -15,3 +15,9 @@ samba_tls_enabled: true
 samba_tls_keyfile: /etc/pki/tls/private/samba.key
 samba_tls_certfile: /etc/pki/tls/certs/samba.cer
 samba_tls_cafile: /etc/pki/tls/certs/samba-ca.crt
+
+collectd_processes:
+- name: samba
+- name: smbd
+- name: krb5kdc
+- name: winbindd