Migrate to flask

This commit migrate the valence code to flask and aslo removed
rabbitmq.

Change-Id: I70234515960e7e2106c5208ced8defc760a4531e

valence/cmd/api.py

@@ -1,49 +0,0 @@
-#!/usr/bin/env python
-
-# copyright (c) 2016 Intel, Inc.
-#
-#    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 sys
-
-from oslo_config import cfg
-from oslo_log import log as logging
-from oslo_service import wsgi
-
-from valence.api import app
-from valence.api import config as api_config
-
-CONF = cfg.CONF
-LOG = logging.getLogger('valence.api')
-
-
-def main():
-    api_config.init(sys.argv[1:])
-    api_config.setup_logging()
-    application = app.setup_app()
-    host = CONF.api.bind_host
-    port = CONF.api.bind_port
-    workers = 1
-
-    LOG.info(("Server on http://%(host)s:%(port)s with %(workers)s"),
-             {'host': host, 'port': port, 'workers': workers})
-
-    service = wsgi.Server(CONF, "valence", application, host, port)
-
-    app.serve(service, CONF, workers)
-
-    LOG.info("Configuration:")
-    app.wait()
-
-
-if __name__ == '__main__':
-    main()