Actions: Move concrete charm module to works with layer-openstack

This patchset fixes the reference bug by moving the concrete charm class
module to lib/charm/openstack/ from lib/charms.  This is so that the
bus.discover() function in layer-openstack [1] can find the concrete
class and instantiate it.  The patchset is dependent on the layer-ovn
(linked below).

[1]: https://review.opendev.org/p/openstack/charm-layer-openstack
Depends On: https://github.com/openstack-charmers/charm-layer-ovn/pull/4

Change-Id: Icf5492e733c5068622bd84243c88ddb7942bf0d7
Closes-Bug: #1861069

src/lib/charm/openstack/__init__.py

@@ -0,0 +1,13 @@
+# Copyright 2019 Canonical Ltd
+#
+# 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.

src/reactive/ovn_central_handlers.py

@@ -12,8 +12,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import os
-
 import charms.reactive as reactive
 import charms.leadership as leadership
 
@@ -21,7 +19,7 @@ import charms_openstack.bus
 import charms_openstack.charm as charm
 
 
-charms_openstack.bus.discover(os.path.join('lib', 'charms'))
+charms_openstack.bus.discover()
 
 # Use the charms.openstack defaults for common states and hooks
 charm.use_defaults(

unit_tests/test_lib_charms_ovn_central.py

@@ -18,7 +18,7 @@ import os
 
 import charms_openstack.test_utils as test_utils
 
-import charms.ovn_central as ovn_central
+import charm.openstack.ovn_central as ovn_central
 
 
 class Helper(test_utils.PatchHelper):