[Research] Investigate cloud-service-broker and the aws-brokerpak as replacement for aws-broker

[rbogle]

In order to provide additional and more robust services to clients as well as improve features and maintainability of existing services, we want to investigate the cloud-service-broker framework as a potential replacement for our aws brokers.

Research Tasks

• Automation and maintainability of CSB and AWS brokerpak in CF
• Feature compare AWS BP support for RDS -- see aws-broker backlog for pending bugs/features needed
• AWS BP ease of adding new aws services ( EFS, SNS, SMS, Dynamodb etc)
• Feature compare AWS BP support for Opensearch
• Feature compare AWS BP support for Elasticache (Redis)
• Feature compare AWS BP support for S3

cloud-service-broker
aws brokerpak

Security considerations

note any potential changes to security boundaries, practices, documentation, risk that arise directly from this story

[bengerman13]

I think the big snags we'll hit here are around lifecycle. I'm not totally sure, but this might also block our longstanding desire to make it possible to restore from a backup via the broker

[markdboyd]

Superseded by cloud-gov/product#2512