Merge pull request #2964 from GoogleCloudPlatform/auto-label

ci: test auto-label configuration

Author: kweinmeister

.github/auto-label.yaml

@@ -0,0 +1,15 @@
+path:
+  pullrequest: true
+  labelprefix: "api: "
+  paths:
+    # i.e., label all PRs of files in root directory and down as "root"
+    ai-platform:
+      .: "aiplatform"
+    appengine:
+      .: "appengine"
+    asset:
+      .: "cloudasset"
+    run:
+      .: "run"
+    vision:
+      .: "vision"