show broken code

Signed-off-by: Nico Schottelius <nico@kr.ethz.ch>

bin/cdist-config

@@ -174,8 +174,9 @@ __cdist_exec_fail_on_error()
 {
    sh -e "$@"
    if [ "$?" -ne 0 ]; then
-      __cdist_echo error  "$1 exited non-zero."
-      __cdist_exit_err "$1 exited non-zero."
+      __cdist_echo error  "$1 exited non-zero, showing code:"
+      cat "$1"
+      __cdist_exit_err "Aborting due to non-zero exit code."
    fi
 }