Add TLS settings to k8s.jsonnet

Use jsonnet computed field names to optionally add TLS configuration to generated Ingress object

In this way, one can easily let the kubernetes ingress handle TLS, with or without a secretName

Additional configuration would be required to tie into cert-manager for automated cert generation

k8s.jsonnet

@@ -43,7 +43,14 @@
 
     // The hostname to use in the Ingress
     ingress_host: "wubloader.example.com",
-    
+
+    // Set to true to let the ingress handle TLS
+    ingress_tls: true,
+
+    // Set to true and give a secretName for ingress, if required for ingress TLS
+    ingress_secret_name_needed: false,
+    ingress_secret_name: "wubloader/tls",
+
     // Connection args for the database.
     // If database is defined in this config, host and port should be postgres:5432.
     db_args: {
@@ -232,8 +239,15 @@
             },
           },
         ],
+        [if ($.config.ingress_tls) then 'tls']: [
+            {
+                hosts: [
+                    $.config.ingress_host,
+                ],
+                [if ($.config.ingress_secret_name_needed) then 'secretName']: $.config.ingress_secret_name,
+            },
+        ],
       },
     },
   ],
-
 }