Move sync team into its own module and add tests

data/model/team.py

@@ -410,6 +410,15 @@ def list_team_users(team):
           .where(Team.id == team, User.robot == False))
 
 
+def list_team_robots(team):
+  """ Returns an iterator of all the *robots* found in a team. Does not include users. """
+  return (User
+          .select()
+          .join(TeamMember)
+          .join(Team)
+          .where(Team.id == team, User.robot == True))
+
+
 def set_team_syncing(team, login_service_name, config):
   """ Sets the given team to sync to the given service using the given config. """
   login_service = LoginService.get(name=login_service_name)