tersestatus: sort the dictionary before iterating on it There has report of flakiness in test-status-terse.t. In the terse code, we are iterating on a dictionary without sorting and since python dicts are unordered, that can be a reason behind the flakiness. Before we have a better implementation for the terse thing, let's make sure current implementation possess minimum bugs. Differential Revision: https://phab.mercurial-scm.org/D740