Add GaleraSpecCore struct

This version of the struct (called "core") is meant to
be used via the OpenStackControlplane. It is the same
as GaleraSpec only it is missing the containerImages.

The Default() function for webhooks has been updated accordingly.

Jira: OSPRH-4835

api/v1beta1/galera_types.go

@@ -39,6 +39,14 @@ type AdoptionRedirectSpec struct {
 
 // GaleraSpec defines the desired state of Galera
 type GaleraSpec struct {
+	GaleraSpecCore `json:",inline"`
+	// Name of the galera container image to run (will be set to environmental default if empty)
+	// +kubebuilder:validation:Required
+	ContainerImage string `json:"containerImage"`
+}
+
+// GaleraSpec defines the desired state of Galera
+type GaleraSpecCore struct {
 	// Name of the secret to look for password keys
 	// +kubebuilder:validation:Required
 	Secret string `json:"secret"`
@@ -48,9 +56,6 @@ type GaleraSpec struct {
 	// Storage size allocated for the mariadb databases
 	// +kubebuilder:validation:Required
 	StorageRequest string `json:"storageRequest"`
-	// Name of the galera container image to run (will be set to environmental default if empty)
-	// +kubebuilder:validation:Required
-	ContainerImage string `json:"containerImage"`
 	// +kubebuilder:validation:Minimum=1
 	// +kubebuilder:default=1
 	// +kubebuilder:validation:Enum=1;3

api/v1beta1/galera_webhook.go

@@ -52,11 +52,18 @@ func (r *Galera) Default() {
 	r.Spec.Default()
 }
 
-// Default - set defaults for this MariaDB spec
+// Default - set defaults for this GaleraSpec
 func (spec *GaleraSpec) Default() {
+	// only image validations go here
 	if spec.ContainerImage == "" {
 		spec.ContainerImage = galeraDefaults.ContainerImageURL
 	}
+	spec.GaleraSpecCore.Default()
+}
+
+// Default - set defaults for the GaleraSpecCore. This version is used by OpenStackControlplane
+func (spec *GaleraSpecCore) Default() {
+	// nothing here yet
 }
 
 // TODO(user): change verbs to "verbs=create;update;delete" if you want to enable deletion validation.