Add SL-5 to the list of VDT platforms
Add SL-5 to the list of VDT platforms

bbockelm/glideinWMS,holzman/glideinwms-old,bbockelm/glideinWMS,bbockelm/glideinWMS,holzman/glideinwms-old,bbockelm/glideinWMS,holzman/glideinwms-old