Have import order follow standard and fix misspelling

Have the import order follow the OpenStack standard:
http://docs.openstack.org/developer/hacking/#import-order-template

Basically the reno imports should be the final section of imports.

Fix a misspelled word.

Change-Id: I3401838398c051a9bdafad5f39d43a6af3de1058

reno/cache.py

@@ -13,12 +13,12 @@
 import os
 import sys
 
+import yaml
+
 from reno import loader
 from reno import scanner
 from reno import utils
 
-import yaml
-
 
 def build_cache_db(reporoot, notesdir, branch, collapse_pre_releases,
                    versions_to_include, earliest_version):

reno/loader.py

@@ -13,11 +13,11 @@
 import logging
 import os.path
 
-from reno import scanner
-
 import six
 import yaml
 
+from reno import scanner
+
 LOG = logging.getLogger(__name__)
 
 
@@ -105,7 +105,7 @@ class Loader(object):
         """Return the data structure encoded in the note file.
 
         Emit warnings for content that does not look valid in some
-        way, but return it anway for backwards-compatibility.
+        way, but return it anyway for backwards-compatibility.
 
         """
         if self._cache:

reno/sphinxext.py

@@ -12,16 +12,16 @@
 
 import os.path
 
-from reno import defaults
-from reno import formatter
-from reno import loader
-
 from docutils import nodes
 from docutils.parsers import rst
 from docutils.parsers.rst import directives
 from docutils.statemachine import ViewList
 from sphinx.util.nodes import nested_parse_with_titles
 
+from reno import defaults
+from reno import formatter
+from reno import loader
+
 
 class ReleaseNotesDirective(rst.Directive):
 

reno/tests/test_cache.py

@@ -14,12 +14,11 @@
 
 import textwrap
 
-from reno import cache
-from reno.tests import base
-
+import mock
 from oslotest import mockpatch
 
-import mock
+from reno import cache
+from reno.tests import base
 
 
 class TestCache(base.TestCase):

reno/tests/test_create.py

@@ -12,12 +12,12 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-from reno import create
-from reno.tests import base
-
 import fixtures
 import mock
 
+from reno import create
+from reno.tests import base
+
 
 class TestPickFileName(base.TestCase):
 

reno/tests/test_formatter.py

@@ -12,12 +12,12 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
+import mock
+
 from reno import formatter
 from reno import loader
 from reno.tests import base
 
-import mock
-
 
 class TestFormatter(base.TestCase):
 

reno/tests/test_loader.py

@@ -15,14 +15,14 @@
 import logging
 import textwrap
 
-from reno import loader
-from reno.tests import base
-
 import fixtures
 import mock
 import six
 import yaml
 
+from reno import loader
+from reno.tests import base
+
 
 class TestValidate(base.TestCase):
 

reno/tests/test_scanner.py

@@ -19,15 +19,15 @@ import re
 import subprocess
 import textwrap
 
+import fixtures
+import mock
+from testtools.content import text_content
+
 from reno import create
 from reno import scanner
 from reno.tests import base
 from reno import utils
 
-import fixtures
-import mock
-from testtools.content import text_content
-
 
 _SETUP_TEMPLATE = """
 import setuptools

reno/tests/test_utils.py

@@ -12,12 +12,12 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-from reno.tests import base
-from reno import utils
-
 import mock
 import six
 
+from reno.tests import base
+from reno import utils
+
 
 class TestGetRandomString(base.TestCase):