endpoint: Don't fail with fatal on l4 policy application
endpoint: Don't fail with fatal on l4 policy application

A better fix should be put in place via #3164

Fixes: #3197

Signed-off-by: Thomas Graf <5f50a84c1fa3bcff146405017f36aec1a10a9e38@cilium.io>

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