Add CPIO apt package to prerequs

- building kata in louhi fails due to missing cpio binary

Change-Id: I7870c55cbf962070f0fb053c9ddca5120a7dfb5e

install-prereqs.sh

diff --git a/install-prereqs.sh b/install-prereqs.sh
index 2a3154a..6542b52 100755
--- a/install-prereqs.sh
+++ b/install-prereqs.sh
@@ -23,6 +23,7 @@
     clang-format
     cmake
     cmake-curses-gui
+    cpio
     curl
     device-tree-compiler
     doxygen