cmd/openshift-install: add explain subcommand

cmd/openshift-install/explain.go

@@ -0,0 +1,11 @@
+package main
+
+import (
+	"github.com/spf13/cobra"
+
+	"github.com/openshift/installer/pkg/explain"
+)
+
+func newExplainCmd() *cobra.Command {
+	return explain.NewCmd()
+}

cmd/openshift-install/main.go

@@ -55,6 +55,7 @@ func installerMain() {
 		newGraphCmd(),
 		newCompletionCmd(),
 		newMigrateCmd(),
+		newExplainCmd(),
 	} {
 		rootCmd.AddCommand(subCmd)
 	}