Set dist_group: "android" for frameworks/base java_sdk_libraries

dist_group replaces owner and the default is going to change, set it
to the current default "android" for frameworks/base java_sdk_libraries.

Bug: 186723288
Test: m checkbuild
Change-Id: I1526853951bcffbe5c5aec6fbc6ba8e0dbea95ad
diff --git a/test-base/Android.bp b/test-base/Android.bp
index b58aa11..97ebba6 100644
--- a/test-base/Android.bp
+++ b/test-base/Android.bp
@@ -55,6 +55,7 @@
     hiddenapi_additional_annotations: [
         "android.test.base-hiddenapi-annotations",
     ],
+    dist_group: "android",
 }
 
 // Build the android.test.base_static library