Load config options

Rally < 0.12 loads only inner config options, so we need to load
rally-openstack options manually.
Hope, Rally 0.12 will fix the issue.

Change-Id: Ib19c58b15229874a27187ab036dc982a1fd9d803

rally_openstack/__init__.py

@@ -0,0 +1,29 @@
+# All Rights Reserved.
+#
+#    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.
+
+from rally.common import version as _rally_version
+
+_version_tuple = _rally_version.version_info.semantic_version().version_tuple()
+
+if _version_tuple < (0, 12):
+    # NOTE(andreykurilin): Rally < 0.12 doesn't care about loading options from
+    #   external packages, so we need to handle it manually.
+
+    from rally.common import opts as global_opts
+
+    from rally_openstack.cfg import opts
+
+    # ensure that rally options are registered.
+    global_opts.register()
+    global_opts.register_opts(opts.list_opts().items())

setup.cfg

@@ -31,6 +31,7 @@ setup-hooks =
 [entry_points]
 rally_plugins =
     path = rally_openstack
+    options = rally_openstack.cfg.opts:list_opts
 
 [build_sphinx]
 all_files = 1

tests/hacking/checks.py

@@ -591,18 +591,14 @@ def check_opts_import_path(logical_line, physical_line, filename):
 
      N342
      """
-    excluded_files = ["./rally/task/engine.py",
-                      "./rally/task/context.py",
-                      "./rally/task/scenario.py",
-                      "./rally/common/opts.py"]
+    excluded_files = ["./rally_openstack/__init__.py"]
     forbidden_methods = [".register_opts("]
 
     if filename not in excluded_files:
         for forbidden_method in forbidden_methods:
             if logical_line.find(forbidden_method) != -1:
                 yield (0, "N342 All options should be loaded from correct "
-                          "paths only. For 'openstack' "
-                          "its './rally/plugin/openstack/cfg'")
+                          "paths only - rally_openstack.cfg module.")
 
 
 def factory(register):