Pass ${installdrive} and ${forceformat} to kickstart
Pass ${installdrive} and ${forceformat} to kickstart

Enable possibility to pass this variables allows user
to automate installation of fuel-master with customization only
grub cmdline.

Closes-bug: #1535712
Change-Id: Ib07f4717aea1f5316d675178ee125c50d8e2c69a

stackforge/fuel-main,SergK/fuel-main,SergK/fuel-main,stackforge/fuel-main,SergK/fuel-main,stackforge/fuel-main