[7.0][SWARM] OSTF tests fail after in neutron_l3_migration_after_reset

[Dmitry]

Run test neutron_l3_migration_after_reset, that includes yhe next steps

1. Revert snapshot with neutron cluster
2. Create an instance with a key pair
3. Manually reschedule router from primary controller
to another one
4. Reset controller with l3-agent
5. Check l3-agent was rescheduled
6. Check network connectivity from instance via
dhcp namespace
7. Run OSTF

Actual Result:

AssertionError: Failed 3 OSTF tests; should fail 0 tests. Names of failed tests: [
 {
  "Check create, update and delete image actions using Glance v1 (failure)": "Image status is incorrect. Please refer to Openstack logs for more information. Please refer to OpenStack logs for more details."
 },
 {
  "Check create, update and delete image actions using Glance v2 (failure)": "Image status is incorrect. Please refer to Openstack logs for more information. Please refer to OpenStack logs for more details."
 },
 {
  "Create volume and boot instance from it (failure)": "Instance creation failed. Please refer to OpenStack logs for more details."
 }

https://patching-ci.infra.mirantis.net/job/7.0.system_test.ubuntu.ha_neutron_destructive_2/68/testReport/(root)/neutron_l3_migration_after_reset/neutron_l3_migration_after_reset/

https://github.com/openstack/fuel-qa/blob/stable-mu/7.0/fuelweb_test/tests/tests_strength/test_neutron.py#L309

[Alexey Stupnikov (astupnikov)]

We no longer support MOS5.1, MOS6.0, MOS6.1
We deliver only Critical/Security fixes to MOS7.0, MOS8.0.
We deliver only High/Critical/Security fixes to MOS9.2.