37a4f7b828
This patch adds 5 seconds sleep in the ``check_north_south_icmp_flow`` method in the ``BaseTempestWhiteboxTestCase`` before stoping tcpdump captures. This is to make sure that whatever was captured on the vms is actually stored in the file so that it can be read later during the test. This change is similar to what was already done in [1] for the method ``test_east_west_icmp_flow`` in the same class. [1] https://review.opendev.org/c/x/whitebox-neutron-tempest-plugin/+/925323 Closes-Bug: #OSPRH-11312 Change-Id: Ic51c46f864a9c34e24a3d969f95a0d721f3eec77