GitLabMirrorFixture: made the repo names parametrable
While the integration tests of py-heptapod have been happy
with the repo.hg
/repo.git
combination up to now, this is
largely due to their fixtures having the function
scope: each
test function runs with its own temporary directory.
But this fixture support class will also be used in the Gitaly
comparison tests of HGitaly, where the storage repositories have
the module
scope. These want to supply randomized names for
the repos to provide the necessary test insulation.