New batch_domains method

[mattias-p]

We should add a new method to the RPCAPI.

Name: batch_domains

Input:

• batch_id - A Batch ID. The batch to examine.
• states - An optional list of elements from {"waiting", "running", "completed", "cancelled", "crashed"}. Default: ["waiting", "running", "completed", "cancelled", "crashed"]. The set of properties to include in the output.

Output:

• waiting - An optional object mapping domain names to job ids. The set of waiting jobs in the batch.
• running - An optional object mapping domain names to job ids. The set of running jobs in the batch.
• completed - An optional object mapping domain names to job ids. The set of completed jobs in the batch.
• cancelled - An optional object mapping domain names to job ids. The set of cancelled jobs in the batch.
• crashed - An optional object mapping domain names to job ids. The set of crashed jobs in the batch.

Stabilization

Tracking issue

Affected interfaces

Additions:

• batch_domains

Dependencies

• This proposal depends on Formal states for test items #960.

Overlapping proposals

• This proposal is basically just an updated version of the get_batch_list method from Updated API methods for batches #1119 that's been renamed and adapted to Batch result UI zonemaster-gui#460. I feel there are too many ideas in Updated API methods for batches #1119 and it's better to split this part out to its own issue.