Add dependency overrides for pkg/analyzer

These dependency overrides prevent pub from getting confused about the
fact that our SDK development is in a mono-repo; that in turn allows
unit tests to be run from inside vscode using the standard test
integration.

Change-Id: Ica94f0a49d8c79f6a1f6395707b02d36da20089d
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/295661
Commit-Queue: Paul Berry <paulberry@google.com>
Reviewed-by: Konstantin Shcheglov <scheglov@google.com>

pkg/analyzer/pubspec.yaml

diff --git a/pkg/analyzer/pubspec.yaml b/pkg/analyzer/pubspec.yaml
index 86300a0..526a959 100644
--- a/pkg/analyzer/pubspec.yaml
+++ b/pkg/analyzer/pubspec.yaml
@@ -34,3 +34,9 @@
   matcher: any
   test: any
   test_reflective_loader: any
+
+dependency_overrides:
+  _fe_analyzer_shared:
+    path: ../_fe_analyzer_shared
+  analyzer_utilities:
+    path: ../analyzer_utilities