modified detection

• 170958 cisco-sa-ise-xxe-inj-GecEHY58.nasl • 1.5
• 170964 cisco-sa-ise-os-injection-pxhKsDM.nasl • 1.5
• 171601 cisco-sa-ise-xss-ubfHG75C.nasl • 1.2
• 173952 cisco-sa-ise-injection-2XbOg9Dg.nasl • 1.3
• 179740 cisco-sa-cisco-pi-epnm-cmd-injection-MLAyEcvk.nasl • 1.2
• 179741 cisco-sa-cisco-ise-cmd-injection-MLAyEcvk.nasl • 1.2