add integration_test as a default top level dir for sources (#3645)

Author: jakemac53

build_runner_core/CHANGELOG.md

@@ -1,6 +1,7 @@
-## 7.2.12-wip
+## 7.3.0
 
 - Bump the min sdk to 3.0.0.
+- Add `integration_test` as a default top level directory for sources.
 
 ## 7.2.11
 

build_runner_core/lib/src/generate/options.dart

@@ -42,6 +42,7 @@ const List<String> defaultRootPackageSources = [
   'example/**',
   'lib/**',
   'test/**',
+  'integration_test/**',
   'tool/**',
   'web/**',
   'node/**',

build_runner_core/pubspec.yaml

@@ -1,5 +1,5 @@
 name: build_runner_core
-version: 7.2.12-wip
+version: 7.3.0
 description: Core tools to organize the structure of a build and run Builders.
 repository: https://github.com/dart-lang/build/tree/master/build_runner_core