Update list of watched objects

[ebaron]

This list is out of date:

cryostat-operator/internal/controllers/cryostat_controller.go

Lines 438 to 439 in 126e3b5

	// Watch for changes to secondary resources and requeue the owner Cryostat
	resources := []client.Object{&appsv1.Deployment{}, &corev1.Service{}, &corev1.Secret{}, &corev1.PersistentVolumeClaim{}}

Originally posted by @ebaron in #294 (comment)

We should add:

• ServiceAccount
• Role
• RoleBinding
• Ingress
• Certificate (can these last two be included if cert-manager is absent from cluster?)
• Issuer

We should also use the Owns method instead of Watches for these, as suggested by the godocs.