OCPBUGS-45991: Mark --report and --pxe flags as experimental

They were introduced recently for "oc adm node-image create" and
should be marked as experimental until next release.

Author: rwsu

pkg/cli/admin/nodeimage/create.go

@@ -161,8 +161,8 @@ func (o *CreateOptions) AddFlags(cmd *cobra.Command) {
 
 	flags.StringVar(&o.AssetsDir, "dir", o.AssetsDir, "The path containing the configuration file, used also to store the generated artifacts.")
 	flags.StringVarP(&o.OutputName, "output-name", "o", "", "The name of the output image.")
-	flags.BoolVarP(&o.GeneratePXEFiles, "pxe", "p", false, "Instead of an ISO, create files that can be used for PXE boot")
-	flags.BoolVarP(&o.GenerateReport, "report", "r", false, "When set, the report.json is always generated in the asset folder")
+	flags.BoolVarP(&o.GeneratePXEFiles, "pxe", "p", false, "Experimental: Instead of an ISO, create files that can be used for PXE boot")
+	flags.BoolVarP(&o.GenerateReport, "report", "r", false, "Experimental: When set, the report.json is always generated in the asset folder")
 
 	flags.StringP(snFlagMacAddress, "m", "", "Single node flag. MAC address used to identify the host to apply the configuration. If specified, the nodes-config.yaml config file will not be used.")
 	usageFmt := "Single node flag. %s. Valid only when `mac-address` is defined."