make RN infra labels public

Summary:
Internal build target labeling.

Changelog: [Internal]

Reviewed By: zlern2k

Differential Revision: D20152676

fbshipit-source-id: 89615a0b3a6f3994b18f2c07b86d0ae93e052327

ReactAndroid/src/main/java/com/facebook/fbreact/specs/BUCK

@@ -35,7 +35,7 @@ rn_xplat_cxx_library(
         "-std=c++14",
         "-Wall",
     ],
-    labels = ["supermodule:android/default/public.react_native"],
+    labels = ["supermodule:android/default/public.react_native.infra"],
     platforms = (ANDROID,),
     preprocessor_flags = [
         "-DLOG_TAG=\"ReactNative\"",