Specify the pagesize when listing artifact before replication job

[stonezdj]

When replication start, Harbor lists the artifact in the repository.

harbor/src/pkg/reg/adapter/harbor/v2/adapter.go

Line 126 in 738fde7

artifacts, err := a.client.listArtifacts(repository)

It sends the list artifact request to the Harbor registry and pageSize is not specified.
Because the pagesize is not specified, it use the default page size (10) and cause the list artifact process very slow, need if the pageSize is 100, it speed up API call.

If there are 20000 tags, the pageSize is 10, there are 2000 API calls,
When page size is 100, there are 200 API calls.