Update 24-setup-initramfs

Move initramfs files off to /etc/xen-tools/initramfs as cat >> file <<  try interpret code ... witch makes the code unsable

]# ls -la /etc/xen-tools/initramfs/
total 20K
drwxr-xr-x 2 root root 4.0K Jun 22 17:04 .
drwxr-xr-x 7 root root 4.0K Jun 22 16:38 ..
-rwxr-xr-x 1 root root 2.8K Jun 22 17:04 BusyBoxramfs.init
-rwxr-xr-x 1 root root 5.3K Jun 22 14:48 mkBusyBoxinitramfs