Updated preseed script

Author: alexpilotti

preseed.cfg

@@ -482,5 +482,5 @@ xserver-xorg xserver-xorg/config/monitor/mode-list \
 # packages and run commands in the target system.
 #d-i preseed/late_command string apt-install zsh; in-target chsh -s /bin/zsh
 
-d-i preseed/late_command string in-target /usr/bin/wget https://raw.github.com/cloudbase/unattended-setup-scripts/master/preseed_post.sh -O /tmp/preseed_post.sh; /bin/bash /tmp/preseed_post.sh 
+d-i preseed/late_command string in-target wget https://raw.github.com/cloudbase/unattended-setup-scripts/master/preseed_post.sh -O /tmp/preseed_post.sh; in-target bash /tmp/preseed_post.sh