fixed default configs

vpngen/default.conf

 # Log
 verb 1
 mute 20
-status /var/vpn/status-${name}
+status /var/log/openvpn-status-${name}
 log-append /var/log/openvpn-${name}.log

vpngen/vpngen.json

 {
-  "vpnPrefix": "vpn_",
+  "vpnPrefix": "vpn-",
   "vpnSuffix": "",
 
   "clientPrefix": "",