consul: Report modified keys even if previously not known
consul: Report modified keys even if previously not known

When a modified key with CreateIndex != ModifyIndex was not found locally, a
warning was emitted but no event was emitted. Keep the warning but still
report the key as modified.

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

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