Add get_policy methods to the kube client

lib/gitlab/kubernetes/kube_client.rb

@@ -92,6 +92,7 @@ module Gitlab
       # group client
       delegate :create_network_policy,
         :get_network_policies,
+        :get_network_policy,
         :update_network_policy,
         :delete_network_policy,
         to: :networking_client
@@ -100,6 +101,7 @@ module Gitlab
       # group client
       delegate :create_cilium_network_policy,
         :get_cilium_network_policies,
+        :get_cilium_network_policy,
         :update_cilium_network_policy,
         :delete_cilium_network_policy,
         to: :cilium_networking_client

spec/lib/gitlab/kubernetes/kube_client_spec.rb

@@ -376,6 +376,7 @@ RSpec.describe Gitlab::Kubernetes::KubeClient do
     [
       :create_network_policy,
       :get_network_policies,
+      :get_network_policy,
       :update_network_policy,
       :delete_network_policy
     ].each do |method|
@@ -400,6 +401,7 @@ RSpec.describe Gitlab::Kubernetes::KubeClient do
     [
       :create_cilium_network_policy,
       :get_cilium_network_policies,
+      :get_cilium_network_policy,
       :update_cilium_network_policy,
       :delete_cilium_network_policy
     ].each do |method|