Store the async-await compiled pub code directly in the repo.

sdk/lib/_internal/pub_generated/test/global/run/runs_script_test.dart

Index: sdk/lib/_internal/pub_generated/test/global/run/runs_script_test.dart
diff --git a/sdk/lib/_internal/pub_generated/test/global/run/runs_script_test.dart b/sdk/lib/_internal/pub_generated/test/global/run/runs_script_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..a60b1283eae337621ae41177f4fb7a17cc7af93d
--- /dev/null
+++ b/sdk/lib/_internal/pub_generated/test/global/run/runs_script_test.dart
@@ -0,0 +1,18 @@
+import '../../descriptor.dart' as d;
+import '../../test_pub.dart';
+main() {
+  initConfig();
+  integration('runs a script in an activated package', () {
+    servePackages((builder) {
+      builder.serve(
+          "foo",
+          "1.0.0",
+          contents: [
+              d.dir("bin", [d.file("script.dart", "main(args) => print('ok');")])]);
+    });
+    schedulePub(args: ["global", "activate", "foo"]);
+    var pub = pubRun(global: true, args: ["foo:script"]);
+    pub.stdout.expect("ok");
+    pub.shouldExit();
+  });
+}