fix: replace IAMPolicy mixin in service config.

Google APIs · copybara-github · commit 5308b8675712 · 2021-06-15T15:52:28.000-07:00
PiperOrigin-RevId: 379592845
diff --git a/google/cloud/kms/v1/cloudkms_v1.yaml b/google/cloud/kms/v1/cloudkms_v1.yaml
@@ -5,6 +5,7 @@ title: Cloud Key Management Service (KMS) API
 
 apis:
 - name: google.cloud.kms.v1.KeyManagementService
+- name: google.iam.v1.IAMPolicy
 
 types:
 - name: google.cloud.kms.v1.LocationMetadata
