Protogeni change; client verification is now marked "optional" in the vserver so that we avoid SSL renegotiation that is triggered when doing it on a per-directory basis.
Protogeni change; client verification is now marked "optional" in the
vserver so that we avoid SSL renegotiation that is triggered when
doing it on a per-directory basis.

Also add ExportCertData so that the entire client certificate it
passed along in the ENV; we need those to get the URNs out of the
altname field.

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