Support globs in $include and $exclude.

sdk/lib/_internal/pub_generated/test/transformer/exclusion/exclude_asset_prefix_test.dart

Index: sdk/lib/_internal/pub_generated/test/transformer/exclusion/exclude_asset_prefix_test.dart
diff --git a/sdk/lib/_internal/pub_generated/test/transformer/exclusion/exclude_asset_list_test.dart b/sdk/lib/_internal/pub_generated/test/transformer/exclusion/exclude_asset_prefix_test.dart
similarity index 74%
copy from sdk/lib/_internal/pub_generated/test/transformer/exclusion/exclude_asset_list_test.dart
copy to sdk/lib/_internal/pub_generated/test/transformer/exclusion/exclude_asset_prefix_test.dart
index 0c2295a963aa6adbb9c112bc67be2bd3d9ee1e3b..12bbfd2c308e4a076c6bea7f979122ea2098d9de 100644
--- a/sdk/lib/_internal/pub_generated/test/transformer/exclusion/exclude_asset_list_test.dart
+++ b/sdk/lib/_internal/pub_generated/test/transformer/exclusion/exclude_asset_prefix_test.dart
@@ -11,12 +11,12 @@ import '../../serve/utils.dart';
 main() {
   initConfig();
   withBarbackVersions("any", () {
-    integration("excludes a list of assets", () {
+    integration("allows a directory prefix to exclude", () {
       d.dir(appPath, [d.pubspec({
           "name": "myapp",
           "transformers": [{
               "myapp/src/transformer": {
-                "\$exclude": ["web/foo.txt", "web/sub/foo.txt"]
+                "\$exclude": "web/sub"
               }
             }]
         }),
@@ -26,14 +26,16 @@ main() {
                 [
                     d.file("foo.txt", "foo"),
                     d.file("bar.txt", "bar"),
-                    d.dir("sub", [d.file("foo.txt", "foo"),])])]).create();
+                    d.dir("sub", [d.file("foo.txt", "foo"),]),
+                    d.dir("subbub", [d.file("foo.txt", "foo"),])])]).create();
 
       createLockFile('myapp', pkg: ['barback']);
 
       pubServe();
-      requestShould404("foo.out");
-      requestShould404("sub/foo.out");
+      requestShouldSucceed("foo.out", "foo.out");
       requestShouldSucceed("bar.out", "bar.out");
+      requestShouldSucceed("subbub/foo.out", "foo.out");
+      requestShould404("sub/foo.out");
       endPubServe();
     });
   });