modified detection

• 500470tenable_ot_yokogawa_CVE-2020-5608.nasl • 1.10
• 500386tenable_ot_yokogawa_CVE-2020-5609.nasl • 1.11
• 500423tenable_ot_siemens_CVE-2020-15781.nasl • 1.12
• 500853tenable_ot_schneider_CVE-2020-7524.nasl • 1.5
• 500666tenable_ot_wago_CVE-2020-12505.nasl • 1.7
• 501749tenable_ot_sprecherautomation_CVE-2020-11496.nasl • 1.2
• 500986tenable_ot_siemens_CVE-2021-25149.nasl • 1.5
• 500665tenable_ot_schneider_CVE-2021-22714.nasl • 1.7
• 500772tenable_ot_siemens_CVE-2021-25669.nasl • 1.7
• 501920tenable_ot_dell_CVE-2021-21540.nasl • 1.2
• 500469tenable_ot_rockwell_CVE-2021-22659.nasl • 1.11
• 501051tenable_ot_siemens_CVE-2021-25148.nasl • 1.4
• 501898tenable_ot_dell_CVE-2021-21541.nasl • 1.2
• 500971tenable_ot_siemens_CVE-2021-25144.nasl • 1.5
• 500998tenable_ot_siemens_CVE-2021-25143.nasl • 1.4
• 501054tenable_ot_siemens_CVE-2021-25150.nasl • 1.4
• 501929tenable_ot_dell_CVE-2021-21539.nasl • 1.3
• 500984tenable_ot_siemens_CVE-2021-25156.nasl • 1.4