The S3 bucket field should provide a drop-down list

[pszufe]

The S3 bucket field (at the top of the screen as well as in the create cluster) should provide a drop-down list that should be created with listBuckets function from AWS JavaScript SDK.

Nevertheless note that:

• the field still should be editable (a user might want to write s3 bucket from another account)
• if there is no permission to get S3 bucket names (function returns an error) the drop-down list should contain element [please provide s3:GetBucketLocation and s3:ListAllMyBuckets permissions]

[mwasiluk]

It seems that listBuckets function from js SDK is not allowed (CORS header missing).

https://stackoverflow.com/questions/35004258/cors-error-with-listbuckets-in-aws-js-sdk