hacking: Specify white list rules in noqa explicity

If 'noqa' is specified all hacking checks are disabled.
It is better to ignore specific rules explicitly rather than
ignoring all. The recent flake8 supports this [1].

[1] http://flake8.pycqa.org/en/latest/user/ignoring-errors.html

Change-Id: Ic4df7f19764e304e5975385fa2cac7dc3c42c80b

{{cookiecutter.repo_name}}/manage.py

@@ -15,7 +15,7 @@
 import os
 import sys
 
-from django.core.management import execute_from_command_line  # noqa
+from django.core.management import execute_from_command_line
 
 if __name__ == "__main__":
     os.environ.setdefault("DJANGO_SETTINGS_MODULE",

{{cookiecutter.repo_name}}/tox.ini

@@ -65,26 +65,3 @@ commands = sphinx-build -a -E -W -d releasenotes/build/doctrees -b html releasen
 [flake8]
 exclude = .venv,.git,.tox,dist,*lib/python*,*egg,build,node_modules
 max-complexity = 20
-
-[hacking]
-import_exceptions = collections.defaultdict,
-                    django.conf.settings,
-                    django.conf.urls.include,
-                    django.conf.urls.patterns,
-                    django.conf.urls.url,
-                    django.core.urlresolvers.reverse,
-                    django.core.urlresolvers.reverse_lazy,
-                    django.template.loader.render_to_string,
-                    django.test.utils.override_settings,
-                    django.utils.datastructures.SortedDict,
-                    django.utils.encoding.force_text,
-                    django.utils.html.conditional_escape,
-                    django.utils.html.escape,
-                    django.utils.http.urlencode,
-                    django.utils.safestring.mark_safe,
-                    django.utils.translation.npgettext_lazy,
-                    django.utils.translation.pgettext_lazy,
-                    django.utils.translation.ugettext_lazy,
-                    django.utils.translation.ungettext_lazy,
-                    operator.attrgetter,
-                    StringIO.StringIO

{{cookiecutter.repo_name}}/{{cookiecutter.module_name}}/content/{{cookiecutter.panel}}s/panel.py

@@ -15,7 +15,7 @@ import horizon
 
 # This panel will be loaded from horizon, because specified in enabled file.
 # To register REST api, import below here.
-from {{cookiecutter.module_name}}.api import rest_api  # noqa
+from {{cookiecutter.module_name}}.api import rest_api  # noqa: F401
 
 
 class {{cookiecutter.panel_func}}s(horizon.Panel):

{{cookiecutter.repo_name}}/{{cookiecutter.module_name}}/test/settings.py

@@ -11,8 +11,8 @@
 #    under the License.
 
 # Default to Horizons test settings to avoid any missing keys
-from horizon.test.settings import *  # noqa
-from openstack_dashboard.test.settings import *  # noqa
+from horizon.test.settings import *  # noqa: F403,H303
+from openstack_dashboard.test.settings import *  # noqa: F403,H303
 
 # pop these keys to avoid log warnings about deprecation
 # update_dashboards will populate them anyway