Create empty neutron.conf file for unit tests
Create empty neutron.conf file for unit tests

The contents of the configuration file do not actually matter
since every configuration has a default.

Upstream neutron removed the previous neutron.conf sample at
112c8dd11d6f746b2b478f83061b63842838b495

lmaycotte/quark,alanquillin/quark,roaet/quark,roaet/quark,rackerlabs/quark,lmaycotte/quark,alanquillin/quark,rackerlabs/quark