Add OpenStack trove classifier for PyPI
Add OpenStack trove classifier for PyPI

Add trove classifier to have the client listed among the
other OpenStack-related projets on PyPI.

Change-Id: Ic07fa4b3717a41fdd74c7447d65037dee7ea7fb7

yamt/networking-ofagent-old3,budnyjj/ofagent,budnyjj/ofagent,yamt/networking-ofagent