[lmi] sudo make root a sandwich

[Greg Chicares]

Vadim--On our corporate RHEL-7 server, we've been doing this:

  $ cd /opt/lmi/src/lmi
  $ sudo ./install_redhat.sh > ~/rhlog_$(date -u +'%Y%m%dT%H%MZ') 2>&1

successfully for months, until today--but now it's failing thus:

  sudo  --user="${NORMAL_USER}"  ./lmi_setup_30.sh
  root is not in the sudoers file.  This incident will be reported.

We run the main script as su, but use 'sudo' to run one sub-script
as a normal user. The apparent reason why this now fails is that
ten hours ago /etc/sudoers was changed, and now it contains this
line (among about a thousand rules), where the '#' is a comment
symbol and not a root prompt:

  #root    ALL =  (ALL) ALL

I see the same thing if I disconnect from the server, log back in
again, and immediately inspect /etc/sudoers (so it's not a weird
effect of nested sudoing).

I suppose this is just a silly mistake, but corporate mistakes
cannot be fixed. (I could probably fix it myself using sudo,
but that would be transgressive.)

I might just replace the offending line to run the sub-script
with excessive privileges:

- sudo  --user="${NORMAL_USER}"  ./lmi_setup_30.sh
+                                ./lmi_setup_30.sh

because that's expedient; but is there a "proper" workaround?
'doas' has apparently been ported from BSD, but it doesn't
seem to be in RHEL. And
  chmod 7777 lmi_setup_30.sh
just seems baneful.