A few fixes to get the tricircle gate working:
- Remove the depend on neutron common exception.
- Update lower-constraints for unneeded version constraining.
- The changes from https://review.openstack.org/#/c/596420/
- Adds neutron and sfc to the functional playbook
- Separates the neutron and networking-sfc requirements into
sibling-requirements.txt so they are not picked up by devstack and
updates tox.ini as needed for them.
Signed-off-by: song baisen <firstname.lastname@example.org>
Co-Authored-By: tangzhuo <email@example.com>, zhiyuan_cai <firstname.lastname@example.org>