Rework passthrough flag

Description

Related Issue

Motivation and Context

How Has This Been Tested?

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

cli/cmd/root.go

@@ -46,7 +46,7 @@ import (
 
 var cfgFile string
 var verbose bool
-var gRPCPassthrough bool
+var noGRPCPassthrough bool
 var loglevel string
 var grpcPort string
 var cliPnd string
@@ -87,7 +87,7 @@ func init() {
 	rootCmd.PersistentFlags().StringVar(&cfgFile, "config", "", "config file (./.gosdnc.toml)")
 	rootCmd.PersistentFlags().StringVarP(&loglevel, "log-level", "l", "", "log level 'debug' or 'trace'")
 	rootCmd.PersistentFlags().BoolVar(&verbose, "verbose", false, "show mne and sbi info")
-	rootCmd.PersistentFlags().BoolVar(&gRPCPassthrough, "grpcPassthrough", true, "set the default resolve scheme for grpc to passthrough, default is true")
+	rootCmd.PersistentFlags().BoolVar(&noGRPCPassthrough, "noGRPCPassthrough", true, "set the default resolve scheme for grpc to not use passthrough, default is false")
 
 	rootCmd.Flags().StringVar(&grpcPort, "grpc-port", "55055", "port for gRPC NBI")
 }
@@ -150,11 +150,11 @@ func initConfig() {
 		cliPnd = uuid.New().String()
 	}
 
-	if gRPCPassthrough {
+	if noGRPCPassthrough {
+		log.Info("gRPC default resolver scheme is not set to passthrough. This might cause issues with the gRPC connection when no real DNS server is available as each gRPC requests requires a DNS request.")
+	} else {
 		log.Info("Setting gRPC default resolver scheme to passthrough. No DNS queries are being made when doing a gRPC request.")
 		resolver.SetDefaultScheme("passthrough")
-	} else {
-		log.Info("gRPC default resolver scheme is not set to passthrough. This might cause issues with the gRPC connection when no real DNS server is available as each gRPC requests requires a DNS request.")
 	}
 
 	adapter, err := adapter.NewPndAdapter(cliPnd, viper.GetString("controllerAPIEndpoint"))