Make the file_lock.FileLock the new default lock backend.

docs/releases/2.2.rst

@@ -47,6 +47,8 @@ calling the Tesseract executable.
   - API endpoint to view or change a role's groups.
   - API endpoint to view or change a role's permissions.
 
+- Make the lock_manager.backends.file_lock.FileLock the new default locking backend.
+
 Removals
 --------
 - Removal of the OCR_TESSERACT_PATH configuration setting.

mayan/apps/lock_manager/settings.py

@@ -4,7 +4,7 @@ from django.utils.translation import ugettext_lazy as _
 
 from smart_settings import Namespace
 
-DEFAULT_BACKEND = 'lock_manager.backends.model_lock.ModelLock'
+DEFAULT_BACKEND = 'lock_manager.backends.file_lock.FileLock'
 DEFAULT_LOCK_TIMEOUT_VALUE = 30
 
 namespace = Namespace(name='lock_manager', label=_('Lock manager'))