Use debian release as hostname when creating debian boxes

boxes/debian/lxc-template

@@ -16,7 +16,7 @@ configure_debian()
 {
     rootfs=$1
     hostname=$2
-    release=$3
+    release=$2
 
     # squeeze only has /dev/tty and /dev/tty0 by default,
     # therefore creating missing device nodes for tty1-4.
@@ -322,7 +322,7 @@ if [ $? -ne 0 ]; then
     exit 1
 fi
 
-configure_debian $rootfs "vagrant-debian-${release}" $release
+configure_debian $rootfs $release
 if [ $? -ne 0 ]; then
     echo "failed to configure debian $release for a container"
     exit 1