add rule for disabling of GUI

[vojtapolasek]

Description:

• add new rule xwindows_remove_packages_and_set_runlevel
  • the rule removes appropriate packages based on rhel version and also configures correct run level
• add this rule to rhel7 and rhel8 stig profiles

Rationale:

• stig effort

[openscap-ci]

Changes identified:
Rules:
 xwindows_remove_packages
Profiles:
 stig on rhel7
 stig on rhel8
 rhelh-stig on rhel8

Show details

Rule xwindows_remove_packages:
 Ansible remediation newly added.
 OVAL check is newly added.
 Bash remediation is newly added.
Profile stig on rhel7:
 Rule xwindows_remove_packages added to stig profile.
 Rule xwindows_runlevel_target, package_xorg-x11-server-common_removed removed from stig profile.
Profile stig on rhel8:
 Rule xwindows_remove_packages added to stig profile.
Profile rhelh-stig on rhel8:
 RHELH-STIG profile extends changed STIG profile.

Recommended tests to execute:
 build_product rhel8
 tests/test_suite.py rule --libvirt qemu:///system test-suite-vm --remediate-using ansible --datastream build/ssg-rhel8-ds.xml xwindows_remove_packages
 tests/test_suite.py rule --libvirt qemu:///system test-suite-vm --remediate-using bash --datastream build/ssg-rhel8-ds.xml xwindows_remove_packages
 tests/test_suite.py profile --libvirt qemu:///system test-suite-vm --datastream build/ssg-rhel8-ds.xml rhelh-stig
 tests/test_suite.py profile --libvirt qemu:///system test-suite-vm --datastream build/ssg-rhel8-ds.xml stig
 build_product rhel7
 tests/test_suite.py profile --libvirt qemu:///system test-suite-vm --datastream build/ssg-rhel7-ds.xml stig

[carlosmmatos]

LGTM