firefly-iii: Use a single Data Importer instance

Tabitha has decided not to use Firefly to manage her finances.  We've
mostly consolidated our expenses and income now, which I manage in my
Firefly account.  In fact, the Ingress for Firefly III itself always
sets the `Remote-User: dustin` header, so only my account is accessible
anyway.  Thus, there is no longer any reason to have two Data Importer
instances.

firefly-iii/importer-ingress.yaml

@@ -1,11 +1,11 @@
 apiVersion: networking.k8s.io/v1
 kind: Ingress
 metadata:
-  name: firefly-iii-importer-dustin
+  name: firefly-iii-importer
   labels:
-    app.kubernetes.io/name: firefly-iii-importer-dustin
+    app.kubernetes.io/name: firefly-iii-importer
     app.kubernetes.io/component: firefly-iii-importer
-    app.kubernetes.io/instance: dustin
+    app.kubernetes.io/instance: firefly-iii
     app.kubernetes.io/part-of: firefly-iii-importer
   annotations:
     cert-manager.io/cluster-issuer: zerossl
@@ -23,53 +23,16 @@ spec:
   ingressClassName: nginx
   tls:
   - hosts:
-    - '*.import.firefly.pyrocufflink.blue'
-    secretName: firefly-import-cert
+    - 'firefly-importer.pyrocufflink.blue'
   rules:
-  - host: dustin.import.firefly.pyrocufflink.blue
+  - host: firefly-importer.pyrocufflink.blue
     http:
       paths:
       - path: /
         pathType: Prefix
         backend:
           service:
-            name: firefly-iii-importer-dustin
-            port:
-              name: http
-
----
-apiVersion: networking.k8s.io/v1
-kind: Ingress
-metadata:
-  name: firefly-iii-importer-tabitha
-  labels:
-    app.kubernetes.io/name: firefly-iii-importer-tabitha
-    app.kubernetes.io/component: firefly-iii-importer
-    app.kubernetes.io/instance: tabitha
-    app.kubernetes.io/part-of: firefly-iii-importer
-  annotations:
-    nginx.ingress.kubernetes.io/proxy-buffer-size: "8k"
-    nginx.ingress.kubernetes.io/auth-method: GET
-    nginx.ingress.kubernetes.io/auth-url: http://authelia.authelia.svc.cluster.local:9091/api/verify
-    nginx.ingress.kubernetes.io/auth-signin: https://auth.pyrocufflink.blue/?rm=$request_method
-    nginx.ingress.kubernetes.io/auth-response-headers: Remote-User,Remote-Name,Remote-Groups,Remote-Email
-    nginx.ingress.kubernetes.io/auth-snippet: |
-      proxy_set_header X-Forwarded-Method $request_method;
-spec:
-  ingressClassName: nginx
-  tls:
-  - hosts:
-    - '*.import.firefly.pyrocufflink.blue'
-    secretName: firefly-import-cert
-  rules:
-  - host: tabitha.import.firefly.pyrocufflink.blue
-    http:
-      paths:
-      - path: /
-        pathType: Prefix
-        backend:
-          service:
-            name: firefly-iii-importer-tabitha
+            name: firefly-iii-importer
             port:
               name: http