Enable automatic sample config generation

- Added an entry_point for oslo config generator
- Added a script to enumerate config options
- Added a tox target to invoke config generator

Change-Id: Ibc66efd103e790a73ef6389817e099ede65d4f32

octavia/opts.py

@@ -0,0 +1,31 @@
+# Licensed under the Apache License, Version 2.0 (the "License"); you may not
+# use this file except in compliance with the License. You may obtain a copy
+# of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import itertools
+
+import octavia.common.config
+
+
+def list_opts():
+    return [
+        ('DEFAULT',
+         itertools.chain(octavia.common.config.core_opts)),
+        ('networking', octavia.common.config.networking_opts),
+        ('oslo_messaging', octavia.common.config.oslo_messaging_opts),
+        ('keystone_authtoken_v3',
+         octavia.common.config.keystone_authtoken_v3_opts),
+        ('haproxy_amphora', octavia.common.config.haproxy_amphora_opts),
+        ('controller_worker', octavia.common.config.controller_worker_opts),
+        ('task_flow', octavia.common.config.task_flow_opts),
+        ('certificates', octavia.common.config.certificate_opts),
+        ('house_keeping', octavia.common.config.house_keeping_opts)
+    ]

setup.cfg

@@ -64,3 +64,5 @@ octavia.cert_manager =
     barbican_cert_manager = octavia.certificates.manager.barbican:BarbicanCertManager
 octavia.plugins =
     hot_plug_plugin = octavia.controller.worker.controller_worker:ControllerWorker
+oslo.config.opts =
+    octavia = octavia.opts:list_opts

tox.ini

@@ -26,6 +26,15 @@ commands = flake8
 [testenv:docs]
 commands = python setup.py build_sphinx
 
+[testenv:genconfig]
+commands =
+         oslo-config-generator --output-file etc/octavia/octavia.conf.sample \
+         --namespace octavia \
+         --namespace oslo.db \
+         --namespace oslo.log \
+         --namespace oslo.messaging \
+         --namespace keystonemiddleware.auth_token
+
 [testenv:specs]
 commands =
     find . -type f -name "*.pyc" -delete