build: fix ldconfig executable error in python

build: fix ldconfig executable error in python

The empty executable is causing problems with meson builds, due to the
error: OSError: [Errno 8] Exec format error: 'ldconfig'

This patch changes the empty ldconfig stub to symlink to /bin/true to
work around this issue.

Fixes: FS#4117
Fixes: 3bd31cc4d2ff ("tools/meson: update to 0.60.0")
Signed-off-by: Damien Mascord <tusker@tusker.org>
Tested-by: Aleksander Jan Bajkowski <olek2@wp.pl> # Tested on Debian 11
Tested-By: Lucian Cristian <lucian.cristian@gmail.com>
Tested-By: Baptiste Jonglez <git@bitsofnetworks.org>
Cc: Rosen Penev <rosenp@gmail.com>
(cherry picked from commit 6a5b4228e30244b44a49f523dea66caf3fbe3307)
Signed-off-by: Baptiste Jonglez <git@bitsofnetworks.org>
[backport to fix prereq check when moving from 22.03 branch to 21.02]