Add automated StrongSwan test

server/site_tests/network_VPN/000VPNGenesis

 # Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 #
 # An example of how to set up a VPN from the Client (DUT), through the
 # Router to to the Server.
 #
 
 { "name":"VPNGenesis",
   "steps":[
@@ skipping 47 matching lines @@
                                    "ifconfig-pool-persist":"/tmp/ipp.txt",
                                    "keepalive":"10 120",
                                    "persist-key":"",
                                    "persist-tun":"",
                                    "status":"/tmp/openvpn-status.log",
                                    "verb":"0"
                                    }
                              }],
     # Having two vpn_server_config invocations back-to-back results in
     # a failure with 'pkill' right after an rspro boot.  There seems
-    # to be some significant latency when starting openvpn the first
-    # time, so slow the system down a tad to avoid spurious errors.
+    # to be some significant latency when starting the first time, so
+    # slow the system down a tad to avoid spurious errors.

[Sam Leffler, 2011/03/31 17:11:27]

is there some way to synchronize the controlling host--such as waiting for an
echo to complete after the pkill?  using a sleep makes me nervous

[thutt, 2011/04/05 21:38:21]

Possibly.  Are you proposing something as simple as running an 'echo ' on the
client, or is there something more complicated you had in mind?

     [ "sleep", { "time": "1" } ],
     [ "vpn_server_config", { "kind" : "openvpn",
                              "config" : { "comp-lzo":"" }
                              }],
     ###  Launch the VPN Client.
     [ "vpn_client_load_tunnel" ],
     [ "vpn_client_config", { "kind":"openvpn",
                              "files":{
                                 "ca-certificate":"/tmp/vpn-ca.crt",
                                 "client-certificate":"/tmp/vpn-client.crt",
@@ skipping 14 matching lines @@
                             }],
     ### Verify the client is connected to the server
     [ "client_ping",       { "ping_ip":"10.8.0.1",
                              "count":"10" } ],
 
     [ "vpn_server_kill" ],       # Shut down the VPN Server.
     [ "vpn_client_kill" ],       # Shut down the VPN Client.
     [ "disconnect" ],            # Disconnect WiFi setup
     ],
 }