kube-prometheus: Convert to jsonnet

jsonnet/alertmanager/alertmanager-main-service.libsonnet

@@ -0,0 +1,12 @@
+local k = import "ksonnet.beta.3/k.libsonnet";
+local service = k.core.v1.service;
+local servicePort = k.core.v1.service.mixin.spec.portsType;
+
+local alertmanagerPort = servicePort.newNamed("web", 9093, "web");
+
+{
+    new(namespace)::
+        service.new("alertmanager-main", {app: "alertmanager", alertmanager: "main"}, alertmanagerPort) +
+          service.mixin.metadata.withNamespace(namespace) +
+          service.mixin.metadata.withLabels({alertmanager: "main"})
+}