modified detection

• 199764redhat_unpatched_tigervnc-rhel6.nasl • 1.2
• 199731redhat_unpatched_tigervnc-rhel7.nasl • 1.2
• 199726redhat_unpatched_tigervnc-rhel8.nasl • 1.2
• 199742redhat_unpatched_tigervnc-rhel9.nasl • 1.2
• 199727redhat_unpatched_odo-rhel8.nasl • 1.5
• 199685redhat_unpatched_odo-rhel9.nasl • 1.5
• 199256redhat_unpatched_kernel-rhel4.nasl • 1.12
• 199257redhat_unpatched_kernel-rhel5.nasl • 1.14
• 199273redhat_unpatched_kernel-rhel6.nasl • 1.17
• 199280redhat_unpatched_kernel-rhel7.nasl • 1.18
• 199272redhat_unpatched_kernel-rhel8.nasl • 1.17
• 199265redhat_unpatched_kernel-rhel9.nasl • 1.20