apycot #2055421 Enable localcache for repositories other than system ones [rejected]

In vcsfile we maintain a local_cache of only "system" Repostories, in hooks.py in class ServerStartupHook and def __call__ and def refresh_local_hgrepo_caches we do a local clone for all repositories that are from cw_source "system".

In apycot I believe that this hook should be take into account "all" Repository objects it sees as they are probably dependencies that will be pulled at some point in the testing process.

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