message: update git tests
  they don't run on osx at the moment, only travis, so I'm catching these late.
diff: @@ -88,7 +88,7 @@ describe('git/config', function() {
  env = await createDefaultEnvironment(`${__dirname}/..`, factory.getModels());
  - let response = await env.lookup('hub:searchers').search('master', { filter: { type: 'articles' } });
  + let response = await env.lookup('hub:searchers').search(env.session, 'master', { filter: { type: 'articles' } });
  expect(response.data.map(m => m.id)).deep.equals(['2']);
  });
  @@ -158,7 +158,7 @@ describe('git/config', function() {
  env = await createDefaultEnvironment(`${__dirname}/..`, factory.getModels());
  - let response = await env.lookup('hub:searchers').search('master', { filter: { type: 'articles' } });
  + let response = await env.lookup('hub:searchers').search(env.session, 'master', { filter: { type: 'articles' } });
  expect(response.data.map(m => m.id)).deep.equals(['2']);
  });
  