Don't build packages on non Linux (#48246)

* Don't build packages on non Linux

Closes #47007

* Explicitly exclude windows only

.ci/os.ps1

@@ -27,10 +27,6 @@ New-Item -ItemType directory -Path \tmp
 
 $ErrorActionPreference="Continue"
 # TODO: remove the task exclusions once dependencies are set correctly and these don't run for Windows or buldiung the deb on windows is fixed
-& .\gradlew.bat -g "C:\Users\$env:username\.gradle" --parallel --scan --console=plain destructiveDistroTest `
-   -x :distribution:packages:buildOssDeb `
-   -x :distribution:packages:buildDeb `
-   -x :distribution:packages:buildOssRpm `
-   -x :distribution:packages:buildRpm `
+& .\gradlew.bat -g "C:\Users\$env:username\.gradle" --parallel --scan --console=plain destructiveDistroTest
 
 exit $?

distribution/packages/build.gradle

@@ -19,6 +19,7 @@
 import org.elasticsearch.gradle.LoggedExec
 import org.elasticsearch.gradle.MavenFilteringHack
 import org.redline_rpm.header.Flags
+import org.elasticsearch.gradle.OS
 
 import java.nio.file.Files
 import java.nio.file.Path
@@ -105,6 +106,9 @@ addProcessFilesTask('rpm', false, false)
 // is the same
 Closure commonPackageConfig(String type, boolean oss, boolean jdk) {
   return {
+    onlyIf {
+      OS.current().equals(OS.WINDOWS) == false
+    }
     dependsOn "process${oss ? 'Oss' : ''}${jdk ? '' : 'NoJdk'}${type.capitalize()}Files"
     packageName "elasticsearch${oss ? '-oss' : ''}"
     arch (type == 'deb' ? 'amd64' : 'X86_64')