Create IAM role and policy for instances to send/receive SQS messages

[jerry-hall]

Instances will require ability to send/receive messages from Amazon SQS.

AC:

• Create IAM role for instances
• Create IAM policy to allow sqs:SendMessage

Example: https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-basic-examples-of-iam-policies.html#send-messages-to-specific-queue