MachineOSConfig name should match MachineConfigPool

Add a restriction where the name of the MachineOSConfig
object must be the same as the MachineConfigPool it is
created for. This will ensure that we only have one MOSC
per MCP.

Signed-off-by: Urvashi <[email protected]>

Author: umohnani8

machineconfiguration/v1/types_machineosconfig.go

@@ -18,6 +18,7 @@ import (
 // MachineOSConfig describes the configuration for a build process managed by the MCO
 // Compatibility level 1: Stable within a major release for a minimum of 12 months or 3 minor releases (whichever is longer).
 // +openshift:compatibility-gen:level=1
+// +kubebuilder:validation:XValidation:rule="self.metadata.name == self.spec.machineConfigPool.name", message="MachineOSConfig name must match the referenced MachineConfigPool name; can only have one MachineOSConfig per MachineConfigPool"
 type MachineOSConfig struct {
 	metav1.TypeMeta `json:",inline"`
 

machineconfiguration/v1/zz_generated.crd-manifests/0000_80_machine-config_01_machineosconfigs.crd.yaml

@@ -345,6 +345,10 @@ spec:
         required:
         - spec
         type: object
+        x-kubernetes-validations:
+        - message: MachineOSConfig name must match the referenced MachineConfigPool
+            name; can only have one MachineOSConfig per MachineConfigPool
+          rule: self.metadata.name == self.spec.machineConfigPool.name
     served: true
     storage: true
     subresources:

machineconfiguration/v1/zz_generated.featuregated-crd-manifests/machineosconfigs.machineconfiguration.openshift.io/OnClusterBuild.yaml

@@ -346,6 +346,10 @@ spec:
         required:
         - spec
         type: object
+        x-kubernetes-validations:
+        - message: MachineOSConfig name must match the referenced MachineConfigPool
+            name; can only have one MachineOSConfig per MachineConfigPool
+          rule: self.metadata.name == self.spec.machineConfigPool.name
     served: true
     storage: true
     subresources:

payload-manifests/crds/0000_80_machine-config_01_machineosconfigs.crd.yaml

@@ -345,6 +345,10 @@ spec:
         required:
         - spec
         type: object
+        x-kubernetes-validations:
+        - message: MachineOSConfig name must match the referenced MachineConfigPool
+            name; can only have one MachineOSConfig per MachineConfigPool
+          rule: self.metadata.name == self.spec.machineConfigPool.name
     served: true
     storage: true
     subresources: