Goal: 

• As a maintainer, I cannot continue the use of eventlet, so I need to remove it.
• As a maintainer, request batching should not use the special eventlet helpers for threading activities, and the code should be ported to use native threads or otherwise rework to handle batching.
• As a maintainer, I don't need stress testing tools which are not invoked.

Acceptance Criteria:

• Patches merged to upstream repository which updates the latest state of networking-generic-switch.
• Eventlet is not present in requirements.txt
• Review dependency map of the installed package to ensure eventlet is no longer explicitly required.