Test cli_node_deletion_check fail due to deletion controller node

[Egor Kotko]

Test cli_node_deletion_check fail on the step network verification due to deletion controller node.

Steps to reproduce:

            1. Revert snapshot 'cli_selected_nodes_deploy'
            2. Check 'slave-03' is present
            3. Destroy 'slave-03'
            4. Wait until 'slave-03' become offline
            5. Delete offline 'slave-03' from db
            6. Check presence of 'slave-03'

Expected result: test passed

Actual result: failed, the vrouter is located on the namespace of the controller node, the default route for compute nodes should be via vrouter ip.
In the test we need or change the reverted snapshot with higher number of controllers, or delete node with not controller role. Because after deletion node with default route ip, checking mirrors impossible due to lack of Internet connection.

[Nastya Urlapova (aurlapova)]

Invalid, because cli_node_deletion_check passed:
https://product-ci.infra.mirantis.net/job/9.0.system_test.ubuntu.command_line/143/testReport/(root)/cli_node_deletion_check/cli_node_deletion_check/

[Egor Kotko (ykotko)]

In the test cli_node_deletion_check node deleting by devops name "slave-03", it can be any role in the cluster, according to the snapshot contains 3 nodes the test should randomly fail with ~0.33% probability of fail.