Update summaries for several endpoints

[shainaraskas]

This PR adds operation summaries for the following areas, using text from the appropriate pages from the elasticsearch API reference.

• alias
• license
• lifecycle
• refresh
• reindex
• rollover

part of #2635

[github-actions]

Following you can find the validation results for the APIs you have changed.

API	Status	Request	Response
indices.exists_alias	🟢	38/38	38/38
indices.explain_data_lifecycle	⚪	Missing test	Missing test
indices.get_alias	🔴	86/86	74/86
indices.get_settings	🔴	61/61	59/61
indices.put_alias	🔴	59/59	20/59
indices.put_settings	🔴	54/57	57/57
indices.refresh	🟢	265/265	265/265
indices.rollover	🔴	26/26	1/26
indices.update_aliases	🔴	26/26	7/26
license.get	🟢	6/6	6/6
reindex	🟢	15/15	14/14

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

[github-actions]

Following you can find the validation results for the APIs you have changed.

API	Status	Request	Response
indices.exists_alias	🟢	38/38	38/38
indices.explain_data_lifecycle	⚪	Missing test	Missing test
indices.get_alias	🔴	86/86	74/86
indices.get_settings	🔴	61/61	59/61
indices.put_alias	🔴	59/59	20/59
indices.put_settings	🔴	54/57	57/57
indices.refresh	🟢	265/265	265/265
indices.rollover	🔴	26/26	1/26
indices.update_aliases	🔴	26/26	7/26
license.get	🟢	6/6	6/6
reindex	🟢	15/15	14/14

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

[github-actions]

Following you can find the validation results for the APIs you have changed.

API	Status	Request	Response
indices.exists_alias	🟢	38/38	38/38
indices.explain_data_lifecycle	⚪	Missing test	Missing test
indices.get_alias	🔴	86/86	74/86
indices.get_settings	🔴	61/61	59/61
indices.put_alias	🔴	59/59	20/59
indices.put_settings	🔴	54/57	57/57
indices.refresh	🟢	265/265	265/265
indices.rollover	🔴	26/26	1/26
indices.update_aliases	🔴	26/26	7/26
license.get	🟢	6/6	6/6
reindex	🟢	15/15	14/14

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

[lcawl]

LGTM!

[github-actions]

Following you can find the validation results for the APIs you have changed.

API	Status	Request	Response
indices.exists_alias	🟢	38/38	38/38
indices.explain_data_lifecycle	⚪	Missing test	Missing test
indices.get_alias	🔴	86/86	74/86
indices.get_settings	🔴	62/62	60/62
indices.put_alias	🔴	59/59	20/59
indices.put_settings	🔴	54/57	57/57
indices.refresh	🟢	269/269	269/269
indices.rollover	🔴	26/26	1/26
indices.update_aliases	🔴	26/26	7/26
license.get	🟢	6/6	6/6
reindex	🟢	15/15	14/14

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