try running tests with *BSD-ish tools (ifconfig/route/netstat) for additional coverage

try running tests with *BSD-ish tools (ifconfig/route/netstat) for additional coverage

Things that should be improved:

* Need a better way to disable iproute2. Most likely the sanest way to
  do this will actually be to split the vpnc-script into two versions, rather than
  try to maintain its one-size-fits-all structure.
* Need a better way to enable tracing in vpnc-script. This really should be added
  to OpenConnect itself (in part, by adding `-x` to the `sh /path/to/vpnc-script`
  exec) since we're frequently requesting it of real users for real issues.

Signed-off-by: Daniel Lenski <dlenski@gmail.com>