- Started to move configuration under the `xpack` name
- Cleaned up `ShieldPlugin`
- renamed `ShieldClient` to `SecurityClient`
- Introduced `XPackClient` that wraps security and watcher clients
Original commit: elastic/x-pack-elasticsearch@f05be0c180
This commit fixes the integration tests and qa test after the reorganization to be
packaged as a single plugin.
Original commit: elastic/x-pack-elasticsearch@d6f488627f