test/helpers: add By statements to preflight checks
test/helpers: add By statements to preflight checks

These checks can take a long time. Providing narration to console provides developers
with feedback as to how tests are progressing.

Signed-off by: Ian Vernon <ian@cilium.io>

michi-covalent/cilium,scanf/cilium,tklauser/cilium,michi-covalent/cilium,scanf/cilium,tklauser/cilium,tklauser/cilium,scanf/cilium,tgraf/cilium,michi-covalent/cilium,tklauser/cilium,cilium/cilium,tgraf/cilium,michi-covalent/cilium,cilium/cilium,michi-covalent/cilium,cilium/cilium,scanf/cilium,tgraf/cilium,tgraf/cilium,tgraf/cilium,cilium-team/cilium,tklauser/cilium,scanf/cilium,scanf/cilium,cilium/cilium,scanf/cilium,cilium/cilium,tgraf/cilium,cilium-team/cilium