Use centralized rules.bzl file for android rules in bp2build.

Change-Id: I6e4837d8b6715960337d0db9b36f8137efb5673e
diff --git a/java/app.go b/java/app.go
index 3c5760b..8338f74 100755
--- a/java/app.go
+++ b/java/app.go
@@ -1476,7 +1476,7 @@
 
 	props := bazel.BazelTargetModuleProperties{
 		Rule_class:        "android_app_certificate",
-		Bzl_load_location: "//build/bazel/rules/android:android_app_certificate.bzl",
+		Bzl_load_location: "//build/bazel/rules/android:rules.bzl",
 	}
 
 	ctx.CreateBazelTargetModule(props, android.CommonAttributes{Name: module.Name()}, attrs)
@@ -1515,7 +1515,7 @@
 
 	props := bazel.BazelTargetModuleProperties{
 		Rule_class:        "android_binary",
-		Bzl_load_location: "//build/bazel/rules/android:android_binary.bzl",
+		Bzl_load_location: "//build/bazel/rules/android:rules.bzl",
 	}
 	ctx.CreateBazelTargetModule(props, android.CommonAttributes{Name: a.Name()}, attrs)