python-neutronclient has been deprecated and Octavia has already removed
it in the dependend change below. These are the respective changes on
ovn-octavia-provider side and they are in line with changes in Octavia
- Replaced code that uses the deprecated `python-neutronclient` library
with code that uses `openstacksdk` and removed `python-neutronclient`
as a dependency.
- Marked certain configuration options that were related to Keystone
authentication as deprecated for removal. In future releases
authentication options options need to be added to the [neutron]
section of the configuration.
Note: After  some calls to neutron test_db_base_plugin_v2 had added
a new param 'as_admin' that need to be included in the calls from
ovn-provider functional tests. Squashed with patch  to solve