This change renames the hijack test name from "Test Hijack api" to "Test Hijack and Block Direct Access to Internal Indices".
Original commit: elastic/x-pack-elasticsearch@118ac18132
This change hijacks the document APIs for the .watches index and prevents direct access to these APIs via REST.
This hijacking is controlled by the "watcher.index.rest.direct_access" setting, this setting defaults to false which restricts access to the index. To allow direct access to the .watches index from the REST API set this setting to `true`
Copied json files from core es to test this feature and added comments to the json files indicating why they have been copied from es core.
Fixeselastic/elasticsearch#336
Original commit: elastic/x-pack-elasticsearch@22335750bd
Brian Murphy
Clinton Gormley