Refactor and add deployment support

lib/servers.libsonnet

@@ -0,0 +1,21 @@
+local defaults = import "../config/defaults.libsonnet";
+local utils = import "../lib/utils.libsonnet";
+
+{
+    hashIp: function (name) std.substr(std.md5(name), 0, 4) + ":" + std.substr(std.md5(name), 4, 4),
+    meta: function (name, instance, deployments) {
+        [name]: {
+            name: name,
+            networking: {
+                publicSubdomain: name + ".infra",
+                internalSubdomain: name + ".i.infra",
+                publicDomain: self.publicSubdomain + "." + defaults.infraDomain,
+                internalDomain: self.internalSubdomain + "." + defaults.infraDomain,
+                wireguardIp: defaults.ipSubnet + ":" + $.hashIp(name),
+            },
+            instance: instance + { name: name },
+            roles: std.uniq(std.sort(std.foldl(function (roles, deployment) roles + deployment.roles, deployments, []))),
+            deployment_vars: std.foldl(function (vars, deployment) utils.merge(vars, deployment.variables), deployments, {})
+        }
+    }
+}