Remove dependency on xcp-fhs

Signed-off-by: Jon Ludlam <jonathan.ludlam@eu.citrix.com>
Use external network-interface rather than an internal one.

Signed-off-by: Jon Ludlam <jonathan.ludlam@eu.citrix.com>
Test is slightly closer to working now

Signed-off-by: Jon Ludlam <jonathan.ludlam@eu.citrix.com>