Add junit dependency needed for Jdk11Jsr166Tests

The test is passing the junit jar to a javac call

Change-Id: Iab2c15e218759a5a397d53c952df4ad735f00b92
diff --git a/d8_r8/commonBuildSrc/src/main/kotlin/DependenciesPlugin.kt b/d8_r8/commonBuildSrc/src/main/kotlin/DependenciesPlugin.kt
index 2214408..9092d25 100644
--- a/d8_r8/commonBuildSrc/src/main/kotlin/DependenciesPlugin.kt
+++ b/d8_r8/commonBuildSrc/src/main/kotlin/DependenciesPlugin.kt
@@ -451,6 +451,10 @@
     "jdk-11-test",
     Paths.get("third_party", "openjdk", "jdk-11-test").toFile(),
     Paths.get("third_party", "openjdk", "jdk-11-test.tar.gz.sha1").toFile())
+  val junit = ThirdPartyDependency(
+    "junit",
+    Paths.get("third_party", "junit").toFile(),
+    Paths.get("third_party", "junit.tar.gz.sha1").toFile())
   val jdwpTests = ThirdPartyDependency(
     "jdwp-tests",
     Paths.get("third_party", "jdwp-tests").toFile(),