https://github.com/ansible/ansible/issues/10840
before
RDS: `ERROR: Inventory script (ec2.py) had an execution error: Forbidden`
EC2: `ERROR: Inventory script (ec2.py) had an execution error: Error connecting to AWS backend.
You are not authorized to perform this operation.`
after
RDS: `ERROR: Inventory script (ec2.py) had an execution error: ERROR: "Forbidden", while: getting RDS instances`
EC2: `ERROR: Inventory script (ec2.py) had an execution error: ERROR: "Error connecting to AWS backend.
You are not authorized to perform this operation.", while: getting EC2 instances`