Do what we do in FreeBSD slicefix to set the console correctly.
Not perfect, but it is what it is.

Fix long standing bug that left garbage at the end of grub.cfg.
We were fixing grub.cfg by opening it for read/write, reading in the
whole file, fixing it, seeking to zero, and writing it back out.
However, if our fixes resulted in a shorter file than before, the
excess bits would be left in the file. Instead, we now truncate after
seeking to zero and before re-writing.

Fix another issue with CentOS 7. Make sure we look for linux16 and
initrd16 as well as linux and initrd.

both sides of the wires table for external network nodes.

the experiment expired (instead of being explicitly terminated).

In the current FreeNAS, the only options for configuring the web server
are to listen on a specific IP or to listen on INADDR_ANY. If you do the
former, then you cannot connect via "localhost". If you do the latter,
then any experiment with an iSCSI blockstore could connect (via its
per-blockstore VLAN/subnet/IP). While authentication is required to
connect, the latter still makes me nervous.

Note that I didn't have to change the "Dave API" to not use localhost
as it appears to hook in below the web server.

This REPLACES FreeNAS 9.2 support. The two are incompatible.

This new code uses the REST API whereever possible (i.e., when it is
implemented and works). There is some client-side reorg going on too.

Assigning -1 to (char) and then converting back to (int) did not seem
to sign extend--the result was 255 (0xff).

log file (after an AuditFork) to get immediately closed.

Also add some debugging stuff.

This avoids a problem that Chrome will try to save to file, if there are
control chars in the output (which there are on most of our consoles).

1. Do not pass -u option (update mode) to the mapper call in GetTicket, if
   not actually an update. This will now cause the mapper to pass the -F
   option to assign, so that fixnode (by the user rspec) will not override
   normal constraint checking.

2. MAINSITE: Add d820-explicit desire so we can actually use the shared
   node pool.

3. Add checks for out of memory errors from assign, and pass that back for
   the caller.

does not override normal constraint checking.

The little magic that runs the rspec_tour:instructions text through the
template code didn't work for multi-site, because it only looked at the
first manifest to generate its template values.  Well, if we have
multiple manifests, then nodes (and thus hostnames) are split between
manifests, so we have to look at all the manifests before we run the
instruction text through the templatizer.

So, we do it the fast way, building up our template data over the passes
through the manifests, saving off the last parsed manifest each time,
and then templatizing the rspec_tour:instructions from the last xml
blob... each manifest has a copy of the instructions.

that and in fact, it needed a change to libaudit. I am still pondering
this, the change I put in needs more thought.

web interface, and so his proj/user directories do not get initially
exported.