Add 'rsync' to dependencies

Otherwise using a $CHROOT_INSTALL will result in a message like this:
```
/usr/sbin/grml-live: line 1150: rsync: command not found
```

diff --git a/debian/control b/debian/control
index 1399275..70f4038 100644 (file)
--- a/debian/control
+++ b/debian/control
@@ -23,6 +23,7 @@ Depends: bc,
          mksh,
          moreutils,
          pciutils,
+         rsync,
          squashfs-tools (>= 1:4.2-0~bpo60),
          syslinux,
          xorriso | genisoimage,