alias 변경 예시

curl -XPOST 'https://atlas-search.회사.com/_aliases?pretty' -H 'Content-Type: application/json' -d' 
{
    "actions" : [
        { "remove" : { "index" : "region_union_20200513_1", "alias" : "region_union" } },
        { "add" : { "index" : "expedia_region_union_backup_047", "alias" : "region_union" } }
    ]
}'