test/runtime: convert RuntimeValidatedPolicyImportTests to use BeforeAll / AfterAll
test/runtime: convert RuntimeValidatedPolicyImportTests to use BeforeAll / AfterAll

Convert this test to use the new, standard constructs created for Cilium e2e testing.

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

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