Move configuration work to library

Signed-off-by: jcsiadal <jeremy.c.siadal@intel.com>

internal/app/wwctl/configure/hosts/root.go

@@ -4,18 +4,18 @@ import "github.com/spf13/cobra"
 
 var (
 	baseCmd = &cobra.Command{
-                DisableFlagsInUseLine: true,
-		Use:   "hosts [OPTIONS]",
-		Short: "Update the /etc/hosts file",
+		DisableFlagsInUseLine: true,
+		Use:                   "hosts [OPTIONS]",
+		Short:                 "Update the /etc/hosts file",
 		Long: "Write out the /etc/hosts file based on the Warewulf template (hosts.tmpl) in the\n" +
 			"Warewulf configuration directory.",
 		RunE: CobraRunE,
 	}
-	SetShow bool
+	setShow bool
 )
 
 func init() {
-	baseCmd.PersistentFlags().BoolVarP(&SetShow, "show", "s", false, "Show configuration (don't update)")
+	baseCmd.PersistentFlags().BoolVarP(&setShow, "show", "s", false, "Show configuration (don't update)")
 }
 
 // GetRootCommand returns the root cobra.Command for the application.