[BUG] Shallow snapshot V2 restore with source_remote_translog_repository fails with unknown parameter

[sachinpkale]

Describe the bug

• In order to allow restore of snapshot on another domain, for shallow snapshot v2, a field was added to RestoreSnapshotRequest: sourceRemoteTranslogRepository
• But this field is not getting recognised in the restore API and fails with unknown parameter error.

Related component

Storage:Snapshots

To Reproduce

1. Create cluster C_1, enable shallow snapshot V2 and take snapshot S_1
2. Create another cluster C_2, register snapshot, segment and translog repos with same settings as that of C_1.
3. Trigger restore API.

% curl -X POST "localhost:9200/_snapshot/backup-snapshot/S_1/_restore?pretty" -H 'Content-Type: application/json' -d'
{
  "indices": "my-index-1",
  "source_remote_store_repository": "backup-segment",
  "source_remote_translog_repository": "backup-translog"
}
'
{
  "error" : {
    "root_cause" : [
      {
        "type" : "illegal_argument_exception",
        "reason" : "Unknown parameter source_remote_translog_repository"
      }
    ],
    "type" : "illegal_argument_exception",
    "reason" : "Unknown parameter source_remote_translog_repository"
  },
  "status" : 400
}

Expected behavior

• Restore should not fail

Additional Details

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• Version [e.g. 22]

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