Addressing comments

Author: dharaneeshvrd

api/v1alpha1/hostedcluster_types.go

@@ -585,6 +585,7 @@ type PowerVSPlatformSpec struct {
 	// CISInstanceCRN is the IBMCloud CIS Service Instance's Cloud Resource Name
 	// This field is immutable. Once set, It can't be changed.
 	//
+	// +kubebuilder:validation:Pattern=`^crn:`
 	// +immutable
 	CISInstanceCRN string `json:"cisInstanceCRN"`
 

cmd/install/assets/hypershift-operator/hypershift.openshift.io_hostedclusters.yaml

@@ -671,6 +671,7 @@ spec:
                         description: CISInstanceCRN is the IBMCloud CIS Service Instance's
                           Cloud Resource Name This field is immutable. Once set, It
                           can't be changed.
+                        pattern: '^crn:'
                         type: string
                       controlPlaneOperatorCreds:
                         description: "ControlPlaneOperatorCreds is a reference to

cmd/install/assets/hypershift-operator/hypershift.openshift.io_hostedcontrolplanes.yaml

@@ -579,6 +579,7 @@ spec:
                         description: CISInstanceCRN is the IBMCloud CIS Service Instance's
                           Cloud Resource Name This field is immutable. Once set, It
                           can't be changed.
+                        pattern: '^crn:'
                         type: string
                       controlPlaneOperatorCreds:
                         description: "ControlPlaneOperatorCreds is a reference to