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Since GUIDs are 16 bytes and our current interface MACs are only 12 bytes,
I agonized over whether to grow the mac column to 16 bytes and just treat
it as a unique identifier (which is all we use that column for anyway).
However, in the end I just added a new guid column as there were mac columns
in a variety of other tables and it wasn't clear what the relationship was
and what I might break.

So, the newnode MFS will now report back a GUID for interfaces it recognizes
as IB (FreeBSD-specific right now). The boss-side checkin code with stash
that value in new_interfaces (and later interfaces when added). For possible
backward compat, it will also generate a MAC address from that (possibly
Mellanox-specific) so that all entries in the interfaces table will have
a MAC (yes, it should really be the other way around--all interfaces should
always have a guid).

End of story. We don't do anything else with IB right now other than stash
an interface GUID.

Also, don't put password/key on the command line.

This commit is intended to makes the license status of Emulab and
ProtoGENI source files more clear.  It replaces license symbols like
"EMULAB-COPYRIGHT" and "GENIPUBLIC-COPYRIGHT" with {{{ }}}-delimited
blocks that contain actual license statements.

This change was driven by the fact that today, most people acquire and
track Emulab and ProtoGENI sources via git.

Before the Emulab source code was kept in git, the Flux Research Group
at the University of Utah would roll distributions by making tar
files.  As part of that process, the Flux Group would replace the
license symbols in the source files with actual license statements.

When the Flux Group moved to git, people outside of the group started
to see the source files with the "unexpanded" symbols.  This meant
that people acquired source files without actual license statements in
them.  All the relevant files had Utah *copyright* statements in them,
but without the expanded *license* statements, the licensing status of
the source files was unclear.

This commit is intended to clear up that confusion.

Most Utah-copyrighted files in the Emulab source tree are distributed
under the terms of the Affero GNU General Public License, version 3
(AGPLv3).

Most Utah-copyrighted files related to ProtoGENI are distributed under
the terms of the GENI Public License, which is a BSD-like open-source
license.

Some Utah-copyrighted files in the Emulab source tree are distributed
under the terms of the GNU Lesser General Public License, version 2.1
(LGPL).

Appears to be a known problem (well, feature). So, I added ilo3 as a
type and use that to send the proper termination (formfeed).

management interfaces more of a first class citizen instead of a
hack. New script:

management_iface -t <type> -a [key|pswd] [-s <switchinfo>]
                        <node_id> mac IP arg1 arg2
management_iface -r <node_id>
  -h       This message
  -t type  Management type; ilo, ilo2, drac
  -s info  Optional switch info; switch,card,port
  -s -     Search output of switchmac to find switch info
  -a pswd  Password auth; provide login and password.
  -a key   SSH key auth; provide login and key path.
  -r       Remove management interface from DB.

which adds the management interface to the database (interfaces,
outlets and outlets_remoteauth. Optionally adds the wires table
entry if you add -s option. Uses switchmac to find the switch info or
you can specify it on the command line. So for example, here is what I
did to add the ilo2 interface for a node:

management_iface -t ilo2 -a pswd -s - pc1 e8:39:35:ae:c9:7c \
                 155.98.34.100 elabman mypasswd
or
management_iface -t ilo2 -a key -s - pc1 e8:39:35:ae:c9:7c \
                 155.98.34.100 elabman /root/.ssh/somekey

Of course someone had to have added the elabman user and key or
password to the ilo config via its interface. 

* dhcpd_makeconf will add local node management interfaces to the
  config file. We can set them to dhcp instead of hardwiring the IP in
  the management interface.

* The DB changes add a management type to the enums in the interfaces
  and wires table, and updates the existing interface entries.