* pr-3707:
config updates for ElastiCache test
Removing the instance_type check in the ElastiCache cluster creation. We now allow the error to bubble up to the userr when the wrong instance type is used. The limitation for t2 instance types now allowing snapshotting is also now documented
Making the changes to the snapshotting for Elasticache Redis as per @catsby's findings
Added an extra test for the Elasticache Cluster to show that updates work. Also added some debugging to show that the API returns the Elasticache retention period info
When I was setting the update parameters for the Snapshotting, I didn't update the copy/pasted params
Adding the ability to specify a snapshot window and retention limit for Redis ElastiCache clusters
ccd37796ec