discover_version needs to find the proper module for server_api_version
method, and it needs to properly parse a list of versions.
Do some refactor to clean things up.
Add unit tests.
Co-Authored-By: waj334 <justin.wilson@intel.com>
Change-Id: I742bc33074cc55fe5f9682b8b97a82573c51183f
Closes-Bug: #1632872