Avoid testing oslo.service library internals
Avoid testing oslo.service library internals

oslo.service===1.10.0 added a few kwargs with proper defaults. In
our tests we seem to be testing library internals, causing the tests
to fail with the new library version.

As a workaround to unblock the gate, add modified test code
to pass with both the old 1.9.0 and 1.10.0 of the oslo.service
library.

Change-Id: Ife69c319409a4214658bc94498108b8b3c5db8cb
Closes-Bug: #1581325

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