Tox: Remove neutron/openstack/common from excludes list
Tox: Remove neutron/openstack/common from excludes list

Commit 56efc8ac76415070041d125a6e30523caf9b3cbd and
commit 7ddfffb0fc37f4fd04937b11ac03b95aeed1306c removed olso incubator.

So we can remove this from the files that are skipped as they no
longer exist.

TrivialFix

Change-Id: If88988edac2ae2829a8f5827f855812db56ba63e

openstack/neutron,openstack/neutron,mahak/neutron,cloudbase/neutron,mahak/neutron,mahak/neutron,cloudbase/neutron,noironetworks/neutron,sebrandon1/neutron,igor-toga/local-snat,sebrandon1/neutron,huntxu/neutron,igor-toga/local-snat,eayunstack/neutron,eayunstack/neutron,openstack/neutron,noironetworks/neutron,huntxu/neutron