Collect additional metrics for harbor

[chlins]

Harbor has supported expose the metrics of harbor, currently existed metrics can be found here, but we also got many requirement issues from the community to ask for adding other metrics, so let's discuss in this place for new metrics, feel free to leave your comments.

[yuangeqingian]

1: Replication task details such as registry name, trigger type, execution status, execution total count
2: Replication total count,
3: Replication execution total count, succeed/failure/stop count

[emlanfranconi]

Question: Has these Replication metrics been added at all to Harbor Version v2.3.3-a0a9ed8a and above?