modified detection

• 199124redhat_unpatched_pcs-rhel6.nasl • 1.5
• 199225redhat_unpatched_pcs-rhel7.nasl • 1.3
• 202316redhat_unpatched_pcs-rhel8_module.nasl • 1.3
• 199198redhat_unpatched_pcs-rhel8.nasl • 1.6
• 202321redhat_unpatched_pcs-rhel9_module.nasl • 1.3
• 199208redhat_unpatched_pcs-rhel9.nasl • 1.5