Order imports in alphabetical order (4/9)

This patch is one in a series to re-enable H306 style check rule
(imports are in alphabetical order). It touches db files.

Implements: blueprint reduce-flake8-ignored-rules (partial)
Change-Id: I66842c6a5d112f948e625e18ef6d01afcad61e57

heat/db/sqlalchemy/api.py

@@ -13,18 +13,14 @@
 #    under the License.
 
 '''Implementation of SQLAlchemy backend.'''
-import sys
 from datetime import datetime
 from datetime import timedelta
+import sys
 
 from oslo.config import cfg
 import sqlalchemy
 from sqlalchemy.orm.session import Session
 
-cfg.CONF.import_opt('max_events_per_stack', 'heat.common.config')
-
-from heat.openstack.common.gettextutils import _
-
 from heat.common import crypt
 from heat.common import exception
 from heat.db.sqlalchemy import filters as db_filters
@@ -32,7 +28,9 @@ from heat.db.sqlalchemy import migration
 from heat.db.sqlalchemy import models
 from heat.openstack.common.db.sqlalchemy import session as db_session
 from heat.openstack.common.db.sqlalchemy import utils
+from heat.openstack.common.gettextutils import _
 
+cfg.CONF.import_opt('max_events_per_stack', 'heat.common.config')
 
 get_engine = db_session.get_engine
 get_session = db_session.get_session

heat/db/sqlalchemy/migrate_repo/versions/029_event_id_to_uuid.py

@@ -13,9 +13,9 @@
 
 import uuid
 
+from migrate.versioning import util as migrate_util
 import sqlalchemy
 
-from migrate.versioning import util as migrate_util
 from heat.openstack.common.gettextutils import _
 
 

heat/db/sqlalchemy/migrate_repo/versions/030_remove_uuidutils.py

@@ -10,9 +10,10 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import sqlalchemy
 import uuid
 
+import sqlalchemy
+
 
 def upgrade(migrate_engine):
     meta = sqlalchemy.MetaData(bind=migrate_engine)

heat/db/sqlalchemy/migrate_repo/versions/034_raw_template_files.py

@@ -12,6 +12,7 @@
 #    under the License.
 
 import sqlalchemy
+
 from heat.db.sqlalchemy.types import Json
 
 

heat/db/sqlalchemy/migrate_repo/versions/035_event_uuid_to_id.py

@@ -11,11 +11,12 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import uuid
 import itertools
-import sqlalchemy
+import uuid
 
 import migrate.changeset.constraint as constraint
+import sqlalchemy
+
 from heat.openstack.common import timeutils
 
 

heat/db/sqlalchemy/migrate_repo/versions/037_migrate_hot_template.py

@@ -11,12 +11,13 @@
 #    under the License.
 
 import copy
+
 from migrate.versioning import util as migrate_util
 from sqlalchemy.orm import sessionmaker
 
-from heat.openstack.common.gettextutils import _
 from heat.db.sqlalchemy import models
 from heat.engine.hot.parameters import HOTParamSchema
+from heat.openstack.common.gettextutils import _
 
 
 def upgrade(migrate_engine):

heat/db/sqlalchemy/migrate_repo/versions/038_software_config_json_config.py

@@ -11,11 +11,11 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from heat.db.sqlalchemy.types import LongText
-from heat.db.sqlalchemy.types import Json
-
 import sqlalchemy
 
+from heat.db.sqlalchemy.types import Json
+from heat.db.sqlalchemy.types import LongText
+
 
 def upgrade(migrate_engine):
     meta = sqlalchemy.MetaData(bind=migrate_engine)

heat/db/sqlalchemy/migrate_repo/versions/041_migrate_hot_template_resources.py

@@ -11,11 +11,12 @@
 #    under the License.
 
 import copy
+
 from migrate.versioning import util as migrate_util
 from sqlalchemy.orm import sessionmaker
 
-from heat.openstack.common.gettextutils import _
 from heat.db.sqlalchemy import models
+from heat.openstack.common.gettextutils import _
 
 
 def upgrade(migrate_engine):

heat/db/sqlalchemy/models.py

@@ -17,14 +17,15 @@ SQLAlchemy models for heat data.
 import uuid
 
 import sqlalchemy
-
-from sqlalchemy.orm import relationship, backref
 from sqlalchemy.ext.declarative import declarative_base
-from heat.openstack.common import timeutils
+from sqlalchemy.orm import backref
+from sqlalchemy.orm import relationship
+from sqlalchemy.orm.session import Session
+
+from heat.db.sqlalchemy.types import Json
 from heat.openstack.common.db.sqlalchemy import models
 from heat.openstack.common.db.sqlalchemy import session
-from sqlalchemy.orm.session import Session
+from heat.openstack.common import timeutils
-from heat.db.sqlalchemy.types import Json
 
 BASE = declarative_base()
 get_session = session.get_session

heat/db/sqlalchemy/types.py

@@ -13,8 +13,9 @@
 
 from json import dumps
 from json import loads
-from sqlalchemy import types
+
 from sqlalchemy.dialects import mysql
+from sqlalchemy import types
 
 
 class LongText(types.TypeDecorator):

heat/db/sync.py

@@ -17,14 +17,14 @@ from __future__ import print_function
 
 import sys
 
+from oslo.config import cfg
+
+from heat.db import migration
 from heat.openstack.common import gettextutils
+from heat.openstack.common import log as logging
 
 gettextutils.install('heat')
 
-from oslo.config import cfg
-from heat.openstack.common import log as logging
-from heat.db import migration
-
 LOG = logging.getLogger(__name__)