interfaces: add missing caches kwarg of localrepo.updatecaches()
Added to localrepo: in
1337bfaa88ca, added to the interface: now.
Differential Revision: https://phab.mercurial-scm.org/D12092
obsolete: don't import from .node twice
See
d55b71393907.
Differential Revision: https://phab.mercurial-scm.org/D12121