Small fixes for shutdown, and cleanup certificate stuff, getting rid of self signed certs that are bogus (for other authorities that are not us).
Small fixes for shutdown, and cleanup certificate stuff, getting
rid of self signed certs that are bogus (for other authorities that
are not us).

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