Organize imports in correct order

Organize imports in the way described in [1]

[1]: http://docs.openstack.org/developer/hacking/#imports

Change-Id: I53c1f7fa7271aaa953b72142f5cca8162aa06ff0
Partially-Bug: 1472597

contrib/plugins/murano_exampleplugin/murano_exampleplugin/__init__.py

@@ -15,13 +15,13 @@
 
 import json
 
+import cfg
 import glanceclient
+
 from murano.common import config
 import murano.dsl.helpers as helpers
 from murano.openstack.common import log as logging
 
-import cfg
-
 
 LOG = logging.getLogger(__name__)
 

murano/common/policy.py

@@ -15,11 +15,11 @@
 # Based on designate/policy.py
 
 from oslo_config import cfg
+from oslo_policy import policy
 from webob import exc as exceptions
 
 from murano.common.i18n import _
 import murano.openstack.common.log as logging
-from oslo_policy import policy
 
 LOG = logging.getLogger(__name__)
 

murano/db/services/environments.py

@@ -12,9 +12,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import yaml
-
 from keystoneclient import exceptions as ks_exceptions
+import yaml
 
 from murano.common import auth_utils
 from murano.common import config

murano/dsl/yaql_expression.py

@@ -16,7 +16,6 @@ import re
 import types
 
 from oslo_utils import encodeutils
-
 import yaql
 import yaql.exceptions
 import yaql.expressions

murano/tests/unit/db/migration/test_migrations.py

@@ -24,12 +24,12 @@ postgres=# create database openstack_citest with owner openstack_citest;
 """
 
 import datetime
-import sqlalchemy
 import uuid
 
 from oslo_db import exception as db_exc
 from oslo_db.sqlalchemy import test_base
 from oslo_db.sqlalchemy import utils as db_utils
+import sqlalchemy
 
 from murano.db.migration import migration
 from murano.tests.unit.db.migration import test_migrations_base as base

murano/tests/unit/engine/system/test_agent.py

@@ -12,9 +12,9 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import mock
 import os
 
+import mock
 import yaml as yamllib
 
 from murano.dsl import murano_class