Spell ISATAP correctly and set noisatap in the ITL

refs #12155

doc/10-icinga-template-library.md

@@ -1456,7 +1456,7 @@ Name                | Description
 :-------------------|:------------
 network\_win\_warn  | **Optional**. The warning threshold.
 network\_win\_crit  | **Optional**. The critical threshold.
-network\_no\_iastap | **Optional**. Do not print iastap interfaces.
+network\_no\_isatap | **Optional**. Do not print ISATAP interfaces.
 
 
 ### <a id="windows-plugins-perfmon-windows"></a> perfmon-windows

itl/command-plugins-windows.conf

@@ -97,10 +97,11 @@ object CheckCommand "network-windows" {
 			description = "Critical threshold"
 		}
 		"-n" = {
-			set_if = "$network_no_iastap$"
-			description = "Don't show isatap interfaces in output"
+			set_if = "$network_no_isatap$"
+			description = "Don't show ISATAP interfaces in output"
 		}
 	}
+	vars.network_no_isatap = true
 }
 
 object CheckCommand "perfmon-windows" {

plugins/check_network.cpp

@@ -73,7 +73,7 @@ INT parseArguments(INT ac, WCHAR **av, po::variables_map& vm, printInfoStruct& p
 		("help,h", "print usage and exit")
 		("version,V", "print version and exit")
 		("debug,d", "Verbose/Debug output")
-		("noisatap,n", "Don't show isatap interfaces in output")
+		("noisatap,n", "Don't show ISATAP interfaces in output")
 		("warning,w", po::wvalue<std::wstring>(), "warning value")
 		("critical,c", po::wvalue<std::wstring>(), "critical value")
 		;