Publish functest-cntt-smoke

Publish functest-cntt-smoke

It tunes neutron-tempest-plugin-api to avoid skipping any test
(conformance as expected by CNTT). Until CNTT clearly defines the
optional and mandatory neutron extensions, it selects the
OpenStack and Functest gate values as default.

The next Neutron extensions are considered as optional (still verified
by functest-smoke):
- logging
- network-segment-range
- port-resource-request
- qos
- trunk
- metering
- floating-ip-port-forwarding
- uplink-status-propagation
- dns-domain-ports
- dns-integration
- router-interface-fip
- router-admin-state-down-before-update
- extraroute-atomic
- subnetpool-prefix-ops

The next tests (tempest_full, tempest_slow, tempest_scenario, etc.)
will be updated in next changes.

Change-Id: I003d1e509cd6dc7bd58261f27676fb53cb79e68c
Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>
(cherry picked from commit 1456f68e90103afab958ae8a305c840e6fa29cf7)