Make site immutable (#127)

Reference:
- #100

Author: henrybear327

api/v1/prefixclaim_types.go

@@ -39,7 +39,7 @@ type PrefixClaimSpec struct {
 	//+kubebuilder:validation:XValidation:rule="self == oldSelf",message="Field 'prefixLength' is immutable"
 	PrefixLength string `json:"prefixLength"`
 
-	//+kubebuilder:validation:XValidation:rule="self == oldSelf || self != ''",message="Field 'site' is required once set"
+	//+kubebuilder:validation:XValidation:rule="self == oldSelf",message="Field 'site' is immutable"
 	Site string `json:"site,omitempty"`
 
 	//+kubebuilder:validation:XValidation:rule="self == oldSelf",message="Field 'tenant' is immutable"

config/crd/bases/netbox.dev_prefixclaims.yaml

@@ -79,8 +79,8 @@ spec:
               site:
                 type: string
                 x-kubernetes-validations:
-                - message: Field 'site' is required once set
-                  rule: self == oldSelf || self != ''
+                - message: Field 'site' is immutable
+                  rule: self == oldSelf
               tenant:
                 type: string
                 x-kubernetes-validations: