Add dummy stunnel server to blocky

Hopefully this keeps the stunnel instance from failing if mysql and redis
are both unavailable

core/blocky/blocky.nomad

@@ -269,6 +269,13 @@ syslog = no
 foreground = yes
 delay = yes
 
+[dns_server]
+# Dummy server to keep stunnel running if no mysql is present
+accept = 8053
+connect = 127.0.0.1:53
+ciphers = PSK
+PSKsecrets = {{ env "NOMAD_SECRETS_DIR" }}/mysql_stunnel_psk.txt
+
 {{ range nomadService 1 (env "NOMAD_ALLOC_ID") "mysql-tls" -}}
 [mysql_client]
 client = yes