Comparing data-path results

[jtaleric]

Problem

We would like to compare different CNI code versions. However comparing two separate test executions, in the same region, with the same instance sizes occasionally produces variable results.

To combat we can :

• establish the hostNetwork performance, and compare the pod network performance to this. When comparing versions, we look at the %diff from hostNetwork to pod network.
• use a single cluster with version x.y capture the results, uninstall all things, upgrade to version x.z rerun datapath tests.

Neither is perfect, and we want the tests to be reliable, so we need to test both out.