Without this port binding fails with below error:-
Network <nw> is type of vxlan but agent <host> or mechanism
driver only support ['gre', 'local', 'flat', 'vlan'].
Also fix permissions of /opt/stack/devstack in ml2 ovs testing
documentation and added these files to irrelevant-files to skip
running functional jobs as these files are not used in those jobs.
Related-Bug: #1934466
Change-Id: I3ca2ea19bf5e316e580669caab4c607447034a11
Since devstack had set OVN as the default backend for Neutron.
Then the minimum local.conf [1] for ML2 ovs will not work at
all. For some local testing of ML2 OVS, it is not right deployment
for users to test the ML2 OVS related cases.
This patch adds a sample local.conf for ml2 ovs to install a small
all in one environment for Neutron testing.
Sample tested OS:
1. CentOS Stream 8
2. CentOS Linux 8
[1] https://docs.openstack.org/devstack/latest/#create-a-local-conf
Closes-Bug: #1934466
Change-Id: Ie7bac1d2819c332a94a0ff308a300638c17f1b1f