TT#43813 panel: split settings per application

Using https://django-appconf.readthedocs.io/en/latest/ helps us to
keep configs per application

Change-Id: Ibf78f59f9e039b46e3ddffa03c888416e658b1b9

panel/conf.py

@@ -0,0 +1,21 @@
+# Copyright (C) 2020 The Sipwise Team - http://sipwise.com
+#
+# This program is free software: you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by the Free
+# Software Foundation, either version 3 of the License, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+# more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program.  If not, see <http://www.gnu.org/licenses/>.
+from django.conf import settings  # noqa
+from appconf import AppConf
+
+
+class PanelConf(AppConf):
+    class Meta:
+        prefix = "panel"

panel/models.py

@@ -0,0 +1,25 @@
+# Copyright (C) 2020 The Sipwise Team - http://sipwise.com
+#
+# This program is free software: you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by the Free
+# Software Foundation, either version 3 of the License, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+# more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+# This is needed due to:
+#
+# AppConf classes depend on being imported during startup of the Django
+# process. Even though there are multiple modules loaded automatically, only
+# the models modules (usually the models.py file of your app) are guaranteed
+# to be loaded at startup. Therefore it’s recommended to put your AppConf
+# subclass(es) there, too.
+#
+# https://django-appconf.readthedocs.io/en/latest/
+from .conf import settings  # noqa

panel/test/test_conf.py

@@ -0,0 +1,22 @@
+# Copyright (C) 2015 The Sipwise Team - http://sipwise.com
+#
+# This program is free software: you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by the Free
+# Software Foundation, either version 3 of the License, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+# more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program.  If not, see <http://www.gnu.org/licenses/>.
+from django.test import TestCase
+
+
+class TestPanelConf(TestCase):
+    def test_django_settings(self):
+        from django.conf import settings
+
+        self.assertListEqual(settings.ALLOWED_HOSTS, ["testserver"])

panel/views.py

@@ -12,11 +12,11 @@
 #
 # You should have received a copy of the GNU General Public License along
 # with this program.  If not, see <http://www.gnu.org/licenses/>.
-from django.conf import settings
 from django.http import HttpResponseNotFound
 from django.shortcuts import get_object_or_404
 from django.shortcuts import render
 
+from .conf import settings
 from build.models import BuildRelease
 from repoapi.models import JenkinsBuildInfo as jbi