Comment 2 for bug 1991232

<arxcruz> :

https://github.com/openstack/tripleo-ci/blob/master/zuul.d/standalone-jobs.yaml#L681
need to either remove this, or change it to HTTP and check if it will continue to fail

the octavia plugin is a little bit old, it's failing because this is set to TCP, and failing with insert-headers is not a valid option for a TCP protocol
https://github.com/openstack/octavia-tempest-plugin/blob/1.2.0/octavia_tempest_plugin/tests/scenario/v2/test_listener.py#L55-L57
and https://github.com/openstack/octavia-tempest-plugin/blob/1.2.0/octavia_tempest_plugin/tests/scenario/v2/test_listener.py#L120

so, there is no if the protocol is tcp or http, it will try to insert the header