Replication issue caused by pagination in api.

[reasonerjt]

1. create a new project;
2. push image to this project until it has more than 10 repositories;
3. make a replication for this project to another harbor;

the replication will be end when the another harbor gets 10 repositories.

@ywk253100 , I think we need to revisit the default behavior of api pagination, by default the api should probably return all data until there's paging parameters

[reasonerjt]

Per discussion, the default page size should be the max page size, and the code should handle the case if the number of items exceeds the page size, i.e. it's the client code that need to make more than one API call and merge the result.