[N1QL RBAC System Catalog] Delete not allowed on system:completed_requests by bucket_admin

According to latest changes in edited permission matrix:
https://docs.google.com/spreadsheets/d/1f-wR5KBlBEkuTzOVHOhSaUCpMPyEvZ63PKer-TnWOMw/edit?ts=597a7a02#gid=0

Delete should be allowed on system:completed_requests by bucket_admin.
1. create a user johnDoe3 with bucket_admin permissions on default.
2. curl -u johnDoe3:password1 http://172.23.107.182:8093/query/service -d 'statement=delete from system:completed_requests'
{
"requestID": "5ea2e2f7-c291-4d41-9ff4-ab217c283841",
"signature": null,
"results": [
],
"errors": [

{"code":13014,"msg":"User does not have credentials to run DELETE queries on the completed_requests bucket. Add role query_delete on completed_requests to allow the query to run."}

],
"status": "stopped",
"metrics":

{"elapsedTime": "8.047095ms","executionTime": "7.974546ms","resultCount": 0,"resultSize": 0,"errorCount": 1}

}