[Swan-dev] problem on new testing machine

[D. Hugh Redelmeier]

| From: D. Hugh Redelmeier <hugh at mimosa.com>

| ERROR    internal error: qemu unexpectedly closed the monitor: 2018-10-17 06:12:21.625+0000: Domain id=1 is tainted: host-cpu
| 2018-10-17T06:12:21.801593Z qemu-system-x86_64: -device virtio-9p-pci,id=fs0,fsdev=fsdev-fs0,mount_tag=swansource,bus=pci.0,addr=0x2: 9pfs Failed to initialize fs-driver with id:fsdev-fs0 and export path:/home/build/libreswan

This message is confusing.  The lede is not "qemu unexpectedly closed
the monitor", it is "9pfs Failed to initialize".

To fix that, I needed to have loaded a module in the host.

In following https://libreswan.org/wiki/Test_Suite I had skipped the
instructions to create /etc/modules-load.d/virtio.conf.  My excuse:
they were buried in the section on entropy.  I have fixed the
instructions.