apt install lrzsz for ZMODEM tests

Change-Id: I96bf34d9841a2031f6f50789f309c8d2515f52fc

install-prereqs.sh

diff --git a/install-prereqs.sh b/install-prereqs.sh
index 293a96e..6f92368 100755
--- a/install-prereqs.sh
+++ b/install-prereqs.sh
@@ -56,6 +56,7 @@
     libxml2-utils
     libxslt-dev
     libzmq5
+    lrzsz
     mono-complete
     ncurses-dev
     ninja-build