we need to set test-requirements with "golang" package due to usage of "go" to set http server on VMs in octavia tests. Without "go" it will fail to run the tests so it needs to be installed. https://github.com/openstack/octavia/blob/master/octavia/tests/tempest/v1/scenario/base.py#L232
*** This bug has been marked as a duplicate of bug 1451777 ***