This starts to fix the scripts so that they load from /usr/lib/crosutils

ssh_test.sh

 #!/bin/bash
 
 # Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # Run remote access test to ensure ssh access to a host is working. Exits with
 # a code of 0 if successful and non-zero otherwise. Used by test infrastructure
 # scripts.
 
-. "$(dirname "$0")/common.sh"
-. "$(dirname "$0")/remote_access.sh"
+# --- BEGIN COMMON.SH BOILERPLATE ---
+# Load common CrOS utilities.  Inside the chroot this file is installed in
+# /usr/lib/crosutils.  Outside the chroot we find it relative to the script's
+# location.
+find_common_sh() {
+  local common_paths=(/usr/lib/crosutils $(dirname "$(readlink -f "$0")"))
+  local path
+
+  SCRIPT_ROOT=
+  for path in "${common_paths[@]}"; do
+    if [ -r "${path}/common.sh" ]; then
+      SCRIPT_ROOT=${path}
+      break
+    fi
+  done
+}
+
+find_common_sh
+. "${SCRIPT_ROOT}/common.sh" || (echo "Unable to load common.sh" && exit 1)
+# --- END COMMON.SH BOILERPLATE ---
+
+. "${SCRIPT_ROOT}/remote_access.sh" || die "Unable to load remote_access.sh"
 
 function cleanup {
   cleanup_remote_access
   rm -rf "${TMP}"
 }
 
 function main() {
-  cd $(dirname "$0")
+  cd "${SCRIPTS_DIR}"
 
   FLAGS "$@" || exit 1
   eval set -- "${FLAGS_ARGV}"
 
   set -e
 
   trap cleanup EXIT
 
   TMP=$(mktemp -d /tmp/ssh_test.XXXX)
 
   remote_access_init
 }
 
 main $@