20125: Deploy Status server

https://20125.home/ is the URL the Status Android application loads in
its main WebView.  This site is powered by a server that generates a
custom page showing the status of our self-hosted applications, based on
alerts retrieved from the AlertManager API.

Android WebView does not allow cleartext HTTP connections.  It does,
however, allow connecting an HTTPS server and ignoring the certificate
it presents, which is effectively the same thing.  Thus, we generate a
self-signed certificate for the Ingress for this site.

20125/status-server-ca.yaml

@@ -0,0 +1,32 @@
+apiVersion: cert-manager.io/v1
+kind: Issuer
+metadata:
+  name: selfsigned-ca
+spec:
+  selfSigned: {}
+
+---
+apiVersion: cert-manager.io/v1
+kind: Certificate
+metadata:
+  name: status-server-ca
+spec:
+  isCA: true
+  commonName: 20125 CA
+  secretName: status-server-ca-secret
+  privateKey:
+    algorithm: ECDSA
+    size: 256
+  issuerRef:
+    name: selfsigned-ca
+    kind: Issuer
+    group: cert-manager.io
+
+---
+apiVersion: cert-manager.io/v1
+kind: Issuer
+metadata:
+  name: status-server-ca
+spec:
+  ca:
+    secretName: status-server-ca-secret