Missing flows in OPNFV SFC testcase (Boron)

SFC OPNFV functest failing because of missing flows.

The SFC functest boots a client and a server instance and 2 firewall VNFs. One firewall blocks HTTP and the other SSH. The client tries to access the server instance through HTTP and SSH and by modifying the classifier we expect to see the right firewall being active.

• The first time it runs, the testcase fails.
• If the OpenStack entities (instances/vnfds/vnfs/sfcs/classifiers) are deleted and the test runs again, it is successful

In the failed attempt, some flows are missing:

1. table=11, n_packets=0, n_bytes=0, nsi=254,nsp=139,in_port=6 actions=load:0x1->NXM_NX_REG0[],move:NXM_NX_NSH_C2[]->NXM_NX_TUN_ID[0..31],resubmit(9,1)

2. table=1, n_packets=0, n_bytes=0, priority=40000,nsi=254,nsp=139,reg0=0x1,in_port=9 actions=pop_nsh,goto_table:21

More detailed description:
https://www.mail-archive.com/opnfv-tech-discuss@lists.opnfv.org/msg00529.html

logs and flows in various test phases:
https://github.com/georgepar/sfc-work/tree/master/boron/netvirt-test