Wrap up other places where the old license access method is used

awx/api/management/commands/uses_mongo.py

@@ -28,7 +28,7 @@ class Command(BaseCommand):
     def handle(self, *args, **kwargs):
         # Get the license data.
         license_reader = TaskSerializer()
-        license_data = license_reader.from_file()
+        license_data = license_reader.from_database()
 
         # Does the license have features, at all?
         # If there is no license yet, then all features are clearly off.

awx/main/access.py

@@ -148,7 +148,7 @@ class BaseAccess(object):
 
     def check_license(self, add_host=False, feature=None, check_expiration=True):
         reader = TaskSerializer()
-        validation_info = reader.from_file()
+        validation_info = reader.from_database()
         if ('test' in sys.argv or 'jenkins' in sys.argv) and not os.environ.get('SKIP_LICENSE_FIXUP_FOR_TEST', ''):
             validation_info['free_instances'] = 99999999
             validation_info['time_remaining'] = 99999999

awx/main/management/commands/inventory_import.py

@@ -1180,7 +1180,7 @@ class Command(NoArgsCommand):
 
     def check_license(self):
         reader = LicenseReader()
-        license_info = reader.from_file()
+        license_info = reader.from_database()
         if not license_info or len(license_info) == 0:
             self.logger.error(LICENSE_NON_EXISTANT_MESSAGE)
             raise CommandError('No Tower license found!')