Put the proper desire on delay nodes if the user asks for a custom delay osid so that they don't get a delay node that can't load their OS.
Put the proper desire on delay nodes if the user asks for a custom
delay osid so that they don't get a delay node that can't load their
OS.

Note, I can't do this when the user does not ask for a specific delay
OSID, since then the OSID is dependant on the node type.

nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome