Convert v2 "Collection" and "CollectionProp" APIs to JAX-RS

SOLR-16347 introduces a JAX-RS framework for Solr's v2 APIs, but it only moved a few token APIs to that approach. Our APIs themselves still need migrated. (See SOLR-16370 for a discussion of the rationale and benefits of doing this).

This ticket targets Solr's v2 Collection and Collection-prop CRUD APIs, as well as our COLLECTIONSTATUS and CLUSTERSTATUS APIs (formerly /admin/collections?action=CLUSTERSTATUS&name=collName)