test release split packages

Author: jenschude

commercetools/commercetools-sdk-java-api/build.gradle

@@ -43,9 +43,10 @@ projectDir.toPath().resolve("src/main/java-generated/com/commercetools/api/model
         include "com/**/models/$dirname/**", "index-files/**", "legal/**", "resources/**", "script-dir/**", "*"
         archiveBaseName = project.name + "-models-$dirname"
     }
+    def publication
     publishing {
         publications {
-            it.create("Maven$dirname", org.gradle.api.publish.maven.MavenPublication, {
+            publication = it.create("Maven$dirname", org.gradle.api.publish.maven.MavenPublication, {
                 artifact modelTask
                 artifact javadocsTask
                 artifact modelSourcesTask
@@ -93,6 +94,9 @@ projectDir.toPath().resolve("src/main/java-generated/com/commercetools/api/model
             })
         }
     }
+    signing {
+        sign publication
+    }
     assemble.dependsOn("models_$dirname")
 }
 
@@ -320,6 +324,9 @@ publishing {
         }
     }
 }
+signing {
+    sign publishing.publications.MavenModelsBase, publishing.publications.MavenBase, publishing.publications.MavenPredicates
+}
 
 tasks.register('runMainMethodThreadLeakTest', JavaExec) {
     group = "Execution"