make-initrd.sh: add busybox, socat and mount.nfs4 to LDD_BINARIES
make-initrd.sh: add busybox, socat and mount.nfs4 to LDD_BINARIES

make-initrd.sh will use ldd to get the share library list from LDD_BINARIES.
And this code can handle static link binary with itself.
So add busybox, socat and mount.nfs4 to LDD_BINARIES to make make-initrd.sh
support different binary.

Signed-off-by: Hui Zhu <3dff0dee05fafb3e3012a2d92c6bc151ff61663b@hyper.sh>

laijs/hyperstart,hyperhq/hyperstart,laijs/hyperstart,hyperhq/hyperstart