test: enable sparse-revlog for test-wireproto-content-redirects.t
We are about to enable sparse-revlog globally. To help with reviewing the tests
change, we isolate them in individual changesets.
Differential Revision: https://phab.mercurial-scm.org/D5343
public attribute not declared in interfaces: badpeer.badattribute
public attribute not declared in interfaces: badpeer.badmethod