Build: Add additional configuration lambda to the publish helper

libraries/kotlin.test/js/build.gradle

@@ -80,10 +80,11 @@ artifacts {
     archives libraryJarWithIr
     distLibrary libraryJarWithIr
     archives sourcesJar
-    sources sourcesJar
     distJs(file(compileKotlin2Js.kotlinOptions.outputFile)) {
         builtBy(compileKotlin2Js)
     }
 }
 
+configureSourcesJar()
+
 configureJavadocJar()

libraries/kotlin.test/jvm/build.gradle

@@ -2,9 +2,13 @@ description = 'Kotlin Test'
 
 apply plugin: 'kotlin-platform-jvm'
 
+archivesBaseName = 'kotlin-test'
+
 configureJvm6Project(project)
-// TODO: Migrate to maven-publish publishing
-configureLegacyPublishing(project)
+
+configurePublishing(project) {
+    artifactId = archivesBaseName
+}
 
 def includeJava9 = BuildPropertiesExtKt.getIncludeJava9(project.kotlinBuildProperties)
 
@@ -21,8 +25,6 @@ dependencies {
     testCompile('junit:junit:4.12')
 }
 
-archivesBaseName = 'kotlin-test'
-
 jar {
     manifestAttributes(manifest, project, 'Test', true)
     if (includeJava9) {
@@ -30,19 +32,14 @@ jar {
     }
 }
 
-task modularJar(type: Jar) {
+configureModularJar {
     dependsOn(jar)
     manifestAttributes(manifest, project, 'Test', true)
-    classifier = 'modular'
 
     from zipTree(jar.outputs.files.singleFile)
 }
 
-artifacts {
-    archives sourcesJar
-    sources sourcesJar
-    archives modularJar
-}
+configureSourcesJar()
 
 configureJavadocJar()