Move kernel_module_disabled use more genric RHEL in conditionals

[Mab879]

Description:

This PR changes the conditions in kernel_module_disabled to use product in 'rhel' vs if product in ['rhel7, 'rhel8'].

Rationale:

Listing versions causes issues when we release a new version of RHEL.
Fixes #9192

[github-actions]

Start a new ephemeral environment with changes proposed in this pull request:

rhel8 (from CTF) Environment (using Fedora as testing environment)

Fedora Testing Environment

Oracle Linux 8 Environment

[jan-cerny]

You say that it fixes #9192 . It fixes for me the problem with kernel_module_can_disabled on RHEL 9, but it doesn't fix the problem with kernel_module_dccp_disabled on RHEL 7. Is it an omission or do the test for RHEL 7 pass on your system?

[jcerny@thinkpad scap-security-guide{pr/9450}]$ python3 tests/automatus.py rule --libvirt qemu:///system ssgts_rhel7 --datastream build/ssg-rhel7-ds.xml --dontclean --scenario missing_blacklist.fail.sh kernel_module_dccp_disabled
Setting console output to log level INFO
INFO - The base image option has not been specified, choosing libvirt-based test environment.
INFO - Logging into /home/jcerny/work/git/scap-security-guide/logs/rule-custom-2022-09-05-1204/test_suite.log
INFO - xccdf_org.ssgproject.content_rule_kernel_module_dccp_disabled
ERROR - Script missing_blacklist.fail.sh using profile (all) found issue:
ERROR - Rule evaluation resulted in pass, instead of expected fail during initial stage 
ERROR - The initial scan failed for rule 'xccdf_org.ssgproject.content_rule_kernel_module_dccp_disabled'.

[codeclimate]

Code Climate has analyzed commit 2bd830e and detected 0 issues on this pull request.

The test coverage on the diff in this pull request is 100.0% (50% is the threshold).

This pull request will bring the total coverage in the repository to 40.4% (-1.8% change).

View more on Code Climate.

[jan-cerny]

Now, it works for me on both rhel 7 and 9.