Add Authentication bootstrap for ingress (#1153)

Originating issue: [IBMPrivateCloud/roadmap#68124](https://github.ibm.com/IBMPrivateCloud/roadmap/issues/68124)

Previously, if a customer had customized their hostname and certificates
using [this process](https://www.ibm.com/docs/en/cloud-paks/foundational-services/4.x_cd?topic=configurations-updating-cp-console-hostname-tls-secret),
the customizations would be lost and would require reconfiguring using
the settings in the Authentication CR.

Now, the bootstrap controller handles finding the existing
customizations from previous versions and persists them in a way that is
compatible with the new Authentication CR configuration method for
ingress.

Signed-off-by: Rob Hundley <rwhundle@us.ibm.com>

Author: rwhundley

cmd/main.go

@@ -107,7 +107,8 @@ func main() {
 	opts.BindFlags(flag.CommandLine)
 	flag.Parse()
 
-	ctrl.SetLogger(zap.New(zap.UseFlagOptions(&opts)))
+	ctrlLog := zap.New(zap.UseFlagOptions(&opts))
+	ctrl.SetLogger(ctrlLog)
 
 	watchNamespace, err := controllercommon.GetWatchNamespace()
 	if err != nil {
@@ -173,9 +174,20 @@ func main() {
 		os.Exit(1)
 	}
 
+	var dc *discovery.DiscoveryClient
+	dc, err = discovery.NewDiscoveryClientForConfig(mgr.GetConfig())
+	if err != nil {
+		setupLog.Error(err, "failed to get discovery client", "controller", "Authentication")
+		os.Exit(1)
+	}
+
 	if err = (&bootstrapcontrollers.BootstrapReconciler{
-		Client: mgr.GetClient(),
-	}).SetupWithManager(mgr); err != nil {
+		Client: &controllercommon.FallbackClient{
+			Client: mgr.GetClient(),
+			Reader: mgr.GetAPIReader(),
+		},
+		DiscoveryClient: dc,
+	}).SetupWithManager(mgr, ctrlLog); err != nil {
 		setupLog.Error(err, "unable to create controller", "controller", "Authentication")
 		os.Exit(1)
 	}
@@ -201,13 +213,6 @@ func main() {
 		setupLog.Error(err, "unable to create controller", "controller", "Client")
 		os.Exit(1)
 	}
-	var dc *discovery.DiscoveryClient
-	dc, err = discovery.NewDiscoveryClientForConfig(mgr.GetConfig())
-	if err != nil {
-		setupLog.Error(err, "failed to get discovery client", "controller", "Authentication")
-		os.Exit(1)
-	}
-
 	if err = (&operatorcontrollers.AuthenticationReconciler{
 		Client: &controllercommon.FallbackClient{
 			Client: mgr.GetClient(),