internal
save lists of active commits for garbage collection
post/repositories/{repository}/gc/prepare_commits
Response
paths to commit dataset
Example response
{
"run_id": "64eaa103-d726-4a33-bcb8-7c0b4abfe09e",
"gc_commits_location": "s3://my-storage-namespace/_lakefs/retention/commits",
"gc_addresses_location": "s3://my-storage-namespace/_lakefs/retention/addresses"
}