k0/cockroach: add public DNS entry for cockroach

Change-Id: I934bf348e2165148b515b709e853ab67f039a402
diff --git a/cluster/kube/k0.libsonnet b/cluster/kube/k0.libsonnet
index 06671b4..df53920 100644
--- a/cluster/kube/k0.libsonnet
+++ b/cluster/kube/k0.libsonnet
@@ -67,6 +67,9 @@
                     ],
                     // Host path on SSD.
                     hostPath: "/var/db/crdb-waw1",
+                    extraDNS: [
+                        "crdb-waw1.hswaw.net",
+                    ],
                 },
             },
             clients: {
@@ -74,6 +77,7 @@
                 cccampixDev: k0.cockroach.waw2.Client("cccampix-dev"),
                 buglessDev: k0.cockroach.waw2.Client("bugless-dev"),
                 sso: k0.cockroach.waw2.Client("sso"),
+                herpDev: k0.cockroach.waw2.Client("herp-dev"),
             },
         },