Increase checkpoint_completion_target to 0.9
As per https://gitlab.com/gitlab-com/infrastructure/issues/1448 we were recommended to use a value of 0.9 instead of 0.7, giving checkpoints more time to perform their writes.
As per https://gitlab.com/gitlab-com/infrastructure/issues/1448 we were recommended to use a value of 0.9 instead of 0.7, giving checkpoints more time to perform their writes.