Install annotation-processor-example for Gradle integration tests.

libraries/examples/annotation-processor-example/build.gradle.kts

@@ -1,6 +1,9 @@
 description = "Simple Annotation Processor for testing kapt"
 
-apply { plugin("kotlin") }
+apply {
+    plugin("kotlin")
+    plugin("maven") // only used for installing to mavenLocal()
+}
 
 dependencies {
     compile(projectDist(":kotlin-stdlib"))

libraries/tools/kotlin-gradle-plugin-integration-tests/build.gradle

@@ -34,7 +34,8 @@ test.dependsOn(":kotlin-allopen:install",
                ":kotlin-reflect:install",
                ":kotlin-test:kotlin-test-jvm:install",
                ":kotlin-gradle-subplugin-example:install",
-               ":kotlin-stdlib-jre8:install")
+               ":kotlin-stdlib-jre8:install",
+               ":examples:annotation-processor-example:install")
 
 // Validate that all dependencies 'install' tasks are added to 'test' dependencies
 // Test dependencies are specified as paths to avoid forcing dependency resolution