proxy: Reduce SO_LINGER timeout to 10 seconds
proxy: Reduce SO_LINGER timeout to 10 seconds

The existing value of 1 minute can put a lot of stress on the proxymap table in
an environment with many concurrent, short lived connections.

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

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