Fix migrate_reindex availabilities

[pquentin]

No description provided.

[github-actions]

Following you can find the validation changes against the target branch for the APIs.

API	Status	Request	Response
bulk	🟢	577/577 → 581/581	595/595 → 599/599
cluster.get_component_template	🟢 → 🔴	14/14 → 15/15	14/14 → 14/15
cluster.put_component_template	🔴	30/34 → 30/35	34/34 → 35/35
indices.create	🔴	1430/1458 → 1434/1462	1458/1458 → 1462/1462
indices.get_data_lifecycle	🔴	14/14 → 15/15	1/14 → 1/15
indices.get_index_template	🟢 → 🔴	23/23 → 24/24	23/23 → 23/24
indices.put_data_lifecycle	🟢 → 🔴	6/6 → 6/7	6/6 → 7/7
indices.put_index_template	🔴	136/160 → 136/161	160/160 → 161/161
search	🔴	2641/2659 → 2649/2667	2659/2659 → 2667/2667
security.create_api_key	🟢	68/68 → 72/72	59/59 → 63/63

You can validate these APIs yourself by using the make validate target.