This commit raises the test coverage for osusers.admin to 100% by adding
tests for UserAdmin, GroupAdmin, SshPublicKeyCreationForm and
SshPublicKeyAdmin. The commit adds a refactoring TODO to
SshPublicKeyAdmin.perform_delete_selected because the asynchronous
background task should be launched from a signal handler.
- don't execute celery tasks directly
- introduce optional parameters to fileserver tasks to allow chaining
- handle user/group/key create and delete tasks in new osusers.signals
class
- adapt unit tests
- change TaskResults model to store the task signatures
- generalize the local settings' logging configuration
- implement save and delete methods in osusers.models.SshPublicKey that trigger
set_file_ssh_authorized_keys
- add new test methods to osusers.tests.test_models.SshPublicKeyTest
- implement osusers.models.SshPublicKey and osusers.models.SshPublicKeyManager
- fix broken osusers.models.tests.test_models
- add new test classes SshPublicKeyManagerTest and SshPublicKeyTest
- add migration for SshPublicKey model
- remove duplicate create_ldap_group task
- create Shadow in User.set_password if necessary
- add test UserManagerTest.test_create_user_tasks for group task
