Get all sprints using GET /rest/agile/1.0/board/{boardId}/sprint returns pagination that does not conform to it's own documentation

Issue Summary

Get all sprints using GET /rest/agile/1.0/board/{boardId}/sprint returns pagination no longer returns the total so clients can’t work out how many times to loop round making a call to return the next page. Instead, there is an undocumented isLast boolean.

Steps to Reproduce

1. Create 2 sprints for a board. For example, let's say the boardId is 7.
2. GET /rest/agile/1.0/board/{boardId}/sprint and add parameter maxResults=1. Using our example: /rest/agile/1.0/board/7/sprint?maxResults=1

Expected Results

Pagination follows the documented behavior:

{
    "startAt" : 0,
    "maxResults" : 1,
    "total": 2,
    "values": [
        { /* result 0 */ }
    ]
}

Actual Results

The results have an undocumented isLast boolean without total:

{
  "maxResults": 1,
  "startAt": 0,
  "isLast": false,
  "values": [
    { /* result 0 */ }
  ]
}

Workaround

Currently the workaround is to make requests until there isLast is true. This workaround prevents parallelization of requests, forcing all clients to perform the iteration in a single process.