[SWARM][8.0] OSTF tests fail during testing HA mode on scalability

[Vladimir Jigulin]

Reproduced on CI:
https://patching-ci.infra.mirantis.net/job/8.0.system_test.ubuntu.ha_neutron_tun_scale/19/testReport/(root)/neutron_tun_scalability/neutron_tun_scalability/

Steps to reproduce:
1. Create cluster
2. Add 1 controller node
3. Deploy the cluster
4. Add 2 controller nodes
5. Deploy changes
6. Add 2 controller 1 compute nodes
7. Deploy changes
8. Delete the primary and the last added controller.
9. Deploy changes
10. Run OSTF

or use neutron_tun_scalability test from fuel-qa

Expected results:
1 ostf test failed

Actual result:
2 ostf tests failed: http://paste.openstack.org/show/516569/

[Vladimir Jigulin (vjigulin)]

snapshot generation is failed. need upload it next time

[Bug Checker Bot (bug-checker)]

(This check performed automatically)
Please, make sure that bug description contains the following sections filled in with the appropriate data related to the bug you are describing:

version

For more detailed information on the contents of each of the listed sections see https://wiki.openstack.org/wiki/Fuel/How_to_contribute#Here_is_how_you_file_a_bug

[Ivan Ponomarev (ivanzipfer)]

https://patching-ci.infra.mirantis.net/job/8.0.system_test.ubuntu.ha_neutron_tun_scale/19/testReport/(root)/neutron_tun_scalability/neutron_tun_scalability/ - Is not reachable for public

[Alexey Stupnikov (astupnikov)]

We no longer support MOS5.1, MOS6.0, MOS6.1
We deliver only Critical/Security fixes to MOS7.0, MOS8.0.