chore: add blunderbuss config to cloud iot label (GoogleCloudPlatform#1339)

Author: gcseh

.github/blunderbuss.yml

@@ -9,6 +9,10 @@ assign_issues_by:
   - 'api: cloudsql'
   to:
   - GoogleCloudPlatform/infra-db-dpes
+- labels:
+  - 'api: cloudiot'
+  to:
+  - laszlokorossy
 
 assign_prs_by:
 - labels:
@@ -21,3 +25,7 @@ assign_prs_by:
   - 'api: cloudsql'
   to:
   - GoogleCloudPlatform/infra-db-dpes
+- labels:
+  - 'api: cloudiot'
+  to:
+  - laszlokorossy