Update codeowners. (#8261)
Update codeowners. (#8261)



tswast/google-cloud-python,tseaver/google-cloud-python,GoogleCloudPlatform/gcloud-python,googleapis/google-cloud-python,tseaver/google-cloud-python,googleapis/google-cloud-python,GoogleCloudPlatform/gcloud-python,tswast/google-cloud-python,tseaver/google-cloud-python,tswast/google-cloud-python