Disable trunk subports connectivity test on Rocky iptables_hybrid job

Recent Rocky backports fail
neutron-tempest-plugin-scenario-openvswitch-iptables_hybrid-rocky job
and as mentioned in linked bug, this is expected as using trunks with
iptables-hybrid driver is not supported.

Add the test to the job blacklist

Change-Id: Iba083f66a4df8ecce23be07ec017d7dfc78406db
Related-Bug: #1838760
1 file changed