chore(samples): add cloud-retail-team as sample owners (googleapis#138)

* Add cloud-retail-team to CODEOWNER

* update codeowner_team in .repo-metadata.json

* 🦉 Updates from OwlBot

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

Co-authored-by: Anthonios Partheniou <[email protected]>
Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

.github/CODEOWNERS

@@ -5,8 +5,8 @@
 # https://help.github.com/en/github/creating-cloning-and-archiving-repositories/about-code-owners#codeowners-syntax
 # Note: This file is autogenerated. To make changes to the codeowner team, please update .repo-metadata.json.
 
-# @googleapis/yoshi-python is the default owner for changes in this repo
-*     @googleapis/yoshi-python
+# @googleapis/yoshi-python @googleapis/cloud-retail-team are the default owners for changes in this repo
+*     @googleapis/yoshi-python @googleapis/cloud-retail-team
 
-# @googleapis/python-samples-reviewers is the default owner for samples changes
-/samples/   @googleapis/python-samples-reviewers
+# @googleapis/python-samples-reviewers @googleapis/cloud-retail-team are the default owners for samples changes
+/samples/   @googleapis/python-samples-reviewers @googleapis/cloud-retail-team

.repo-metadata.json

@@ -11,6 +11,6 @@
     "distribution_name": "google-cloud-retail",
     "api_id": "retail.googleapis.com",
     "default_version": "v2",
-    "codeowner_team": "",
+    "codeowner_team": "@googleapis/cloud-retail-team",
     "api_shortname": "retail"
 }