Testing variant publishing

- use other artifactId when on java8

build.gradle

@@ -217,6 +217,8 @@ jastadd {
 publishing {
     publications {
         maven(MavenPublication) {
+            artifactId = Project.getName() + (JavaVersion.current() == JavaVersion.VERSION_1_8 ? '-java8' : '')
+
             from components.java
         }
     }