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Intended to estimate Powder wireless resources to appear on the front page.
This is HORRIBLY quick and dirty and definitely needs to be thrown away.
It estimates the number of OAI experiments (1 SDR + 1 OTS UE) that could
be accommodated as a stopgap measure for the tech preview demo.  It must
be replaced before we have real wireless sites installed.

there is an adminmfs, instead of defaulting to null. The ONIE based
switches operate more like normal nodes wrt reload/admin MFSs

that image is an *imported* system image, we are almost certainly
referring to a version related to the origin image, not the local
copy (which is not in sync with the origin wrt the history). In that
case, we can use the hash from the image server to track down the local
version.

Aside; If I were going to redo the import mechanism, I would make image
provenance the default for everyone, and make the option be whether to
save or delete the image file (that was the entire reason I made
provenance optional, most sites especially geni racks, do not have
enough storage to maintain old images. And image import would always
import the history too, which is something I did later when we thought
deltas were going to solve our problems.

(If the reservation being approved isn't in the list returned by LookupAll(),
presumably because it was previously pending, then append it during
feasibility checking.)

pubsubd wasn't restarting, surely because the existing pubsubd was still
running and/or socket state was still live in the kernel even after
putative death.  This took a long time to manifest, and it's not clear
exactly what the problem was, but making sure pubsubd is dead (and is no
longer holding its specific port) is appropriate even if we assume
REUSEADDR is working, and fixes the current problem.  This was only
observable on the pc3000s and c220g2s, as far as I saw.

We have had issues with uploading images to boss where they are then written
across NFS to ops. That seems to be a network hop too far on CloudLab Utah
where we have a 10Gb control network. We get occasional transcient timeouts
from somewhere in the TCP code. With the convoluted path through real and
virtual NICs, some with offloading, some without, packets wind up getting
out of order and someone gets far enough behind to cause problems.

So we work around it.

If IMAGEUPLOADTOFS is defined in the defs-* file, we will run a frisbee
master server on the fs (ops) node and the image creation path directs the
nodes to use that server. There is a new hack configuration for the master
server "upload-only" which is extremely specific to ops: it validates the
upload with the boss master server and, if allowed, fires up an upload
server for the client to talk to. The image will thus be directly uploaded
to the local (ZFS) /proj or /groups filesystems on ops. This seems to be
enough to get around the problem.

Note that we could allow this master server to serve downloads as well to
avoid the analogous problem in that direction, but this to date has not
been a problem.

NOTE: the ops node must be in the nodes table in the DB or else boss will
not validate proxied requests from it. The standard install procedure is
supposed to add ops, but we have a couple of clusters where it is not in
the table!

1) Rework so that instead of relying on swapin__last + autoswap timeout,
   set expt_expires for classic experiments at the beginning of swapin
   time. This is cause swapin_last is not set till the end of swapin,
   and so during swapin the res system is in an inconsistent state since
   there is no way to determine when the experiment ends.

2) On the Geni path, simplify expiration handling; do not allow a slice
   modification and expiration change at the same time; the bookkeeping
   and failure rollback is a pain, especially wrt reservation system,
   and this rarely ever actually happens, so get rid of a lot of
   complication.

Also assume debian9 == ubuntu16.  Also fix some ubuntu15 install bugs.

request (and the https code calls die) we can catch it and return a
proper error response.

infrastructure switch