sync openstack-database version from upstream

- set debug/verbose in trove-conductor.conf
- set rabbitmq configuration values in trove-conductor.conf
- add tenant_id to endpoint urls
- fix api_extensions_path by using a path relative to the pybasedir
- make trove_volume_support in trove-taskmanager.conf configurable
Merge pull request #17 from mapleoin/sync-upstream-database

sync openstack-database version from upstream