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

sdk/lib/_internal/pub_generated/test/get/git/different_repo_name_test.dart

+library pub_tests;
+import '../../descriptor.dart' as d;
+import '../../test_pub.dart';
+main() {
+  initConfig();
+  integration(
+      'doesn\'t require the repository name to match the name in the ' 'pubspec',
+      () {
+    ensureGit();
+    d.git(
+        'foo.git',
+        [d.libDir('weirdname'), d.libPubspec('weirdname', '1.0.0')]).create();
+    d.dir(appPath, [d.appPubspec({
+        "weirdname": {
+          "git": "../foo.git"
+        }
+      })]).create();
+    pubGet();
+    d.dir(
+        packagesPath,
+        [
+            d.dir(
+                'weirdname',
+                [d.file('weirdname.dart', 'main() => "weirdname";')])]).validate();
+  });
+}