Commit fix to regex for default:float to allow exponent notation; I found this regex on a web page someplace.
Commit fix to regex for default:float to allow exponent notation; I
found this regex on a web page someplace.

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