Add Default function on WatcherSpecCore

Add empty Default function on WatcherSpecCore to be called from
OpenStackControlPlane defaulting webhook.

Currently, there is no values that need to be defaulted while creating
Watcher but let's add it for consistency and as a placeholder for future
need.

Author: amoralej

api/v1beta1/watcher_webhook.go

@@ -62,6 +62,11 @@ func (spec *WatcherSpec) Default() {
 	spec.WatcherImages.Default(watcherDefaults)
 }
 
+// Default - set defaults for this WatcherSpecCore spec.
+func (spec *WatcherSpecCore) Default() {
+	// no validations . Placeholder for defaulting webhook integrated in the OpenStackControlPlane
+}
+
 //+kubebuilder:webhook:path=/validate-watcher-openstack-org-v1beta1-watcher,mutating=false,failurePolicy=fail,sideEffects=None,groups=watcher.openstack.org,resources=watchers,verbs=create;update,versions=v1beta1,name=vwatcher.kb.io,admissionReviewVersions=v1
 
 var _ webhook.Validator = &Watcher{}