Merge pull request #676 from Khalian/master

Update ignite help, image and kernel to no longer require root

cmd/ignite/cmd/root.go

@@ -43,7 +43,7 @@ func NewIgniteCommand(in io.Reader, out, err io.Writer) *cobra.Command {
 
 			// TODO Some commands do not need to check root
 			// Currently it seems to be only ignite version that does not require root
-			if cmd.Name() == "version" && cmd.Parent().Name() == "ignite" {
+			if isNonRootCommand(cmd.Name(), cmd.Parent().Name()) {
 				return
 			}
 
@@ -117,6 +117,19 @@ func NewIgniteCommand(in io.Reader, out, err io.Writer) *cobra.Command {
 	return root
 }
 
+func isNonRootCommand(cmd string, parentCmd string) bool {
+	if parentCmd != "ignite" {
+		return false
+	}
+
+	switch cmd {
+	case "version", "help", "image", "kernel", "completion", "inspect", "ps":
+		return true
+	}
+
+	return false
+}
+
 func addGlobalFlags(fs *pflag.FlagSet) {
 	AddQuietFlag(fs)
 	logflag.LogLevelFlagVar(fs, &logLevel)