Fix incorrect wget argument in esxi kickstart file (#276)
Fix incorrect wget argument in esxi kickstart file (#276)

/usr/bin/wget --spider results in an "unrecognized option '--spider'"
error in ESXi 5.5 and ESXi 6.0.  Change the command option to the correct
"-s" argument
larry-dean/on-http,RackHD/on-http,keedya/on-http,RackHD/on-http,lanchongyizu/on-http,larry-dean/on-http,larry-dean/on-http,lanchongyizu/on-http,lanchongyizu/on-http,lanchongyizu/on-http,keedya/on-http,larry-dean/on-http,keedya/on-http,RackHD/on-http,RackHD/on-http,keedya/on-http