interactions with versioning that need to be worked out, since only
the head version can be deleted.

create_instance, now that user can manage multiple keys.

can get it easily.

which looks at environment variable to determine what user should be used
for access checks. Now used from the protogeni interface, when real
accounts are in use (but all work still done by geniuser).

interface.

as a guest and that they have to apply for a real account.

to let people login using the trusted signer.

most recently used.

Was using internal EventSend but that is really just for talking
to boss and we need to talk to ops.

Fixes issue with user appearing multiple times on a /etc/group line.

Currently only used to shutdown remote blockstores in advance of a
swapout (per-experiment event: objtype=="BSTORE", objname=="rem-bstore",
eventtype=="STOP").

.forward files. Change addpubkeys to use dropfile for the auth keys
file, and add createsshkey method to generate the key on ops, and
send the public key back via stdout.

It is back to unique per experiment, per dataset.

and loadlength!