This commit adds tests for more corner cases of
SshPublicKeyManager.parse_keytext to raise the test coverage to 100%.
The method now handles invalid keys more thoroughly.
- 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
