Add Prometheus Metric for Harbor Replication Executions

[neevnuv]

Is your feature request related to a problem? Please describe.
I use harbor's replication in order to replicate images between two haror sites (base on push events) and need to monitor if a replication failed.

Describe the solution you'd like
We'd like to have a metric that show the replication exectutions. this would allow us to monitor:
increase(harbor_replication_executions{name="my-rep"}[15m])

Describe the main design/architecture of your solution
Add the new metric to the harbor exporter. The new metric will be of type gauge. Each execution will have the values of 1, as long as it exists in the harbor API. The metric will show the following values as labels:

• replication name
• execution id
• execution status
• trigger type (event based or manual)

[kingbj940429]

@wy65701436

can I work this?

[Vad1mo]

@wy65701436 @stonezdj this could be something for the new auditlogs instead of Prometheus exporter. or it can be both.

[Vad1mo]

@wy65701436

can I work this?

Sure go ahead...