[kinesis] Add monitoring support for Redshift/S3 alarms

[voho]

We use AWS Firehose to publish data to Redshift and S3. (Our Firehose stream publishes to both)
We would like to have metric and dashboards for that.

Firehose Metrics: https://docs.aws.amazon.com/firehose/latest/dev/monitoring-with-cloudwatch-metrics.html

The most important metrics:

• DeliveryToRedshift.Success
• DeliveryToRedshift.DataFreshness
• DeliveryToS3.Success
• DeliveryToS3.DataFreshness

I would like to be able to create alarms at least on the Success metric.

See a default FireHose dashboard from AWS console in attached file.

[zqumei0]

What kind of alarms can you set up with just a success metric rather than representing it as some percentage? Given a kinesis firehose delivery stream would the following equation be equivalent to a success rate: success % = DeliveryToS3.Success / IncomingPutRequests?