If a required service is not enabled then we skip the test.
The discovery is done by tests/functional/base.py:is_service_enabled
but this method is broken, credentials are not passed to the
'openstack service show' command so every call will fail and every test
that relies on it will be skipped. This commit fixed that method and
the issues that popped up when re-enabling tests.
Network segment range:
- issue where we assumed network-segment-range extension is always
present
- issue where we compare integers and string representations of numbers
Subnet:
- issue where we try to deepcopy an uncopyable object in UnsetSubnet
Change-Id: Id3cc907c1ed2a25b49cf6f4a7233e0401a02383a
Story: 2005169
Task: 29908
7741347041