add test for system_info.py
add test for system_info.py

Change I86a2bbdc added a rest endpoint to get system info but did not
include tests.  This is a follow on change to add a test for it.

Change-Id: I334caaff6d3ea0d3aac85ad3ec1a4b64c552ee88

ColdrickSotK/storyboard,ColdrickSotK/storyboard,ColdrickSotK/storyboard