Start the migration of data.
See https://www.paws-r-sdk.com/docs/elasticache_start_migration/ for full documentation.
elasticache_start_migration(ReplicationGroupId, CustomerNodeEndpointList)
[required] The ID of the replication group to which data should be migrated.
[required] List of endpoints from which data should be migrated. For Redis OSS (cluster mode disabled), list should have only one element.