RHEL 8 OpenSCAP STIG scan diverges from RHEL 8 DISA STIG V2R1

#### Description of problem:

A system hardened according to the RHEL 8 DISA STIG V2R1 doesn't pass the OpenSCAP scan.

#### Details:

This content is not aligned with content from _Red Hat Enterprise Linux 8 STIG - Ver 2, Rel 1_

The misalignment affects these profiles:

- RHEL 8 STIG
- RHEL 9 STIG

The misalignment affects these rules:

* RHEL-08-020220, RHEL-08-020221 ("Limit Password Reuse: password-auth" and "Limit Password Reuse: system-auth") - both these STIG items have been removed from the latest STIG release.
* RHEL-08-010151, RHEL-09-611200 ("Require Authentication for Single User Mode") - There is a bug in the scanner where it is looking in /etc/systemd/system/rescue.service.d instead of the correct file, /usr/lib/systemd/system/rescue.service.

#### Outcome:

- [ ] This project's content can be improved:
- [ ] Check needs to be improved.

#### SCAP Security Guide Version:
0.1.75 - which is supposed to audit according to RHEL 8 STIG V2R1

#### External Content's Version:
DISA RHEL 8 STIG V2R1