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

CiscoSystems/networking-cisco,hareeshpc/networking-cisco,cisco-openstack/networking-cisco,Gitweijie/first_project,Gitweijie/first_project,Tehsmash/networking-cisco,openstack/networking-cisco,Tehsmash/networking-cisco,CiscoSystems/networking-cisco,Tehsmash/networking-cisco-nexus,hareeshpc/networking-cisco,nikolay-fedotov/networking-cisco,noironetworks/networking-cisco,noironetworks/networking-cisco,cisco-openstack/networking-cisco,Tehsmash/networking-cisco-apic,openstack/networking-cisco