k8s: Do not use AdditionalProperties
k8s: Do not use AdditionalProperties

AdditionalProperties is supported by k8s 1.11 and later only
Without it non-string value types are accepted which may cause policy translation
in cilium-agent to fail.

Signed-off-by: Jarno Rajahalme <0f1ab0ac7dffd9db21aa539af2fd4bb04abc3ad4@covalent.io>

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