Change sataportcount -> portcount for Virtualbox 4.3
Change sataportcount -> portcount for Virtualbox 4.3

xezpeleta/vagrant-debian-jessie-64,code-kitchen/vagrant-debian-jessie-64,Gasol/vagrant-debian-jessie-64,jstuyts/vagrant-jessie-minimal-amd64-customizable,crazycode/vagrant-debian-wheezy-64,dforsber-p/vagrant-debian-jessie-64,shtouff/vagrant-debian-jessie-64,kraksoft/vagrant-box,wummel/vagrant-virtualbox-debian-base,ginas/vagrant-debian-wheezy-64,nvtkaszpir/vagrant-box,dotzero/vagrant-debian-jessie-64