policy: Simplify L7PolicyMap creation.
policy: Simplify L7PolicyMap creation.

Initially the map is empty, so there is no point in appending the rules.

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

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