Code refactoring - Watcher Applier package

This patchset is there to change the code structure.
The objective is to flatten the project file tree by merging
'api/' and 'framework/' into a single package. This also contains
some tidy ups in package naming (like using only singular nouns).

This should only affect file/folder names and their subsequent
import paths wherever they were used.

Change-Id: Id7b37667c613086d8ef3cd1f367c4219bf026fc7

watcher/applier/rpcapi.py

@@ -0,0 +1,73 @@
+# -*- encoding: utf-8 -*-
+# Copyright (c) 2015 b<>com
+#
+# Authors: Jean-Emile DARTOIS <jean-emile.dartois@b-com.com>
+#
+# 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 oslo_config import cfg
+from oslo_log import log
+import oslo_messaging as om
+
+
+from watcher.applier.manager import APPLIER_MANAGER_OPTS
+from watcher.applier.manager import opt_group
+from watcher.common import exception
+from watcher.common.messaging.messaging_core import MessagingCore
+from watcher.common.messaging.notification_handler import NotificationHandler
+from watcher.common import utils
+
+
+LOG = log.getLogger(__name__)
+CONF = cfg.CONF
+CONF.register_group(opt_group)
+CONF.register_opts(APPLIER_MANAGER_OPTS, opt_group)
+
+
+class ApplierAPI(MessagingCore):
+
+    def __init__(self):
+        super(ApplierAPI, self).__init__(
+            CONF.watcher_applier.publisher_id,
+            CONF.watcher_applier.topic_control,
+            CONF.watcher_applier.topic_status,
+            api_version=self.API_VERSION,
+        )
+        self.handler = NotificationHandler(self.publisher_id)
+        self.handler.register_observer(self)
+        self.topic_status.add_endpoint(self.handler)
+        transport = om.get_transport(CONF)
+
+        target = om.Target(
+            topic=CONF.watcher_applier.topic_control,
+            version=self.API_VERSION,
+        )
+
+        self.client = om.RPCClient(transport, target,
+                                   serializer=self.serializer)
+
+    def launch_action_plan(self, context, action_plan_uuid=None):
+        if not utils.is_uuid_like(action_plan_uuid):
+            raise exception.InvalidUuidOrName(name=action_plan_uuid)
+
+        return self.client.call(
+            context.to_dict(), 'launch_action_plan',
+            action_plan_uuid=action_plan_uuid)
+
+    def event_receive(self, event):
+        try:
+            pass
+        except Exception as e:
+            LOG.error("evt %s" % e.message)
+            raise e