This fixes a race condition in sudo where it would log a log of
error messages to syslog if used while we're running the install
script: files around sudoers.d/ are then moved around, and it'll
yell for each file it previously listed if the file no longer
exists when it tries to stat() it. It also deprecates the --no-wait
flag of the install script, as now the sudoers.d/ directory will
always have integrity at all times.
Signed-off-by: Stéphane Lesimple <stephane.lesimple+bastion@ovhcloud.com>