test: fix Policy cmd test resource deletion
test: fix Policy cmd test resource deletion

Put creation of resources in \`BeforeEach\`, deletion in \`AfterEach`.

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

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