Changes to get key values by kv_id

get/v1/{project}/kie/kv/{kv_id}

Feb 10, 202009d438be0630 Revision changes
- warning
  the optional response header X-Kie-Revision removed for the status 200
- info
  api operation id Get removed and replaced with GetByKey
- info
  added the new optional query request parameter label
- info
  added the non-success response with the status
- info
  removed the non-success response with the status