fix model validation in schema files

Author: Drew Banin

dbt/model.py

@@ -298,7 +298,7 @@ def __init__(self, project, target_dir, rel_filepath, own_project):
 
     def get_model(self, project, model_name):
         rel_filepath = self.rel_filepath.replace('schema.yml', '{}.sql'.format(model_name))
-        model = Model(project, self.top_dir, rel_filepath)
+        model = Model(project, self.top_dir, rel_filepath, self.own_project, TestCreateTemplate())
         return model
 
     def __repr__(self):

dbt/schema_tester.py

@@ -191,8 +191,7 @@ def validate_schema(self, schemas):
             for model_name in schema.schema.keys():
                 # skip this model if it's not enabled
                 model = schema.get_model(self.project, model_name)
-                config = model.get_config(self.project)
-                if not config['enabled']:
+                if not model.is_enabled:
                     continue
 
                 constraints = schema.schema[model_name]['constraints']