Fix eventlet conection reactor close method logic

Change-Id: Id8adeca320846437364bc0ed9f19db0a8ab83bf3
Add streaming API devstack integration

Deploy and run magnetodb-streaming-api-server in devstack

Change-Id: Ibfe8db1376e78c5bc788e51af18f1110455f93ee
Merge "Fix eventlet conection reactor close method logic"
Merge "Add streaming API devstack integration"
Add tempest tests for streaming API

Add tempest client for streaming API
Add tests

Change-Id: I8e9a311498874f98f1a767814860f7c18b5b573e