Update gRPC Java Testing Lib to build Host and Android clients. am: a97c369d0c

Original change: https://android-review.googlesource.com/c/platform/external/grpc-grpc-java/+/1531218

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I6d44aebe72c45b727c6ba3da59c95e13a9b1a6fe
diff --git a/testing/Android.bp b/testing/Android.bp
index f4c2661..91dc792 100644
--- a/testing/Android.bp
+++ b/testing/Android.bp
@@ -14,8 +14,9 @@
 //
 //
 
-java_library_host {
+java_library {
     name: "grpc-java-testing",
+    host_supported: true,
     srcs: [
         "src/main/java/io/grpc/testing/*.java",
     ],
@@ -34,4 +35,5 @@
         "truth-prebuilt",
         "junit",
     ],
+    sdk_version: "current",
 }