modified detection

• 501351tenable_ot_cisco_CVE-2020-10136.nasl • 1.2
• 501267tenable_ot_cisco_CVE-2020-3120.nasl • 1.2
• 501264tenable_ot_cisco_CVE-2019-1649.nasl • 1.2
• 178783ivanti_endpoint_manager_mobile_11_10_0_2.nasl • 1.2
• 501357tenable_ot_cisco_CVE-2020-3119.nasl • 1.2