Resolve "Implement TLS support for SBI"

Description

See #266

cli/cmd/networkElementCreate.go

@@ -63,6 +63,7 @@ if they diverge from the default credentials (user:'admin' and pw:'arista').`,
 			TransportOption: &tpb.TransportOption_GnmiTransportOption{
 				GnmiTransportOption: &tpb.GnmiTransportOption{},
 			},
+			Tls: tls,
 		}
 		switch opcode {
 		case "plugin":
@@ -73,7 +74,13 @@ if they diverge from the default credentials (user:'admin' and pw:'arista').`,
 			opt.Type = spb.Type_TYPE_OPENCONFIG
 		}
 
-		resp, err := pndAdapter.AddNetworkElement(createContextWithAuthorization(), mneName, opt, uuid.MustParse(pluginID))
+		pluginUUID, err := uuid.Parse(pluginID)
+		if err != nil {
+			spinner.Fail(err)
+			return err
+		}
+
+		resp, err := pndAdapter.AddNetworkElement(createContextWithAuthorization(), mneName, opt, pluginUUID)
 		if err != nil {
 			spinner.Fail(err)
 			return err
@@ -88,21 +95,25 @@ if they diverge from the default credentials (user:'admin' and pw:'arista').`,
 	PostRun: func(cmd *cobra.Command, args []string) {
 		// Necessary for prompt mode. The flag variables have to be resetted,
 		// since in prompt mode the program keeps running.
+
 		mneName, opcode, pluginID, address, username, password = "", "", "", "", "", ""
+		tls = false
 	},
 }
 
 var mneName string
 var opcode string
 var pluginID string
+var tls bool
 
 func init() {
 	networkElementCmd.AddCommand(networkElementCreateCmd)
 
 	networkElementCreateCmd.Flags().StringVar(&mneName, "name", "", "add a network element name (optional)")
-	networkElementCreateCmd.Flags().StringVar(&opcode, "type", "", "generation target (csbi or plugin)")
+	//networkElementCreateCmd.Flags().StringVar(&opcode, "type", "", "generation target (csbi or plugin)")
 	networkElementCreateCmd.Flags().StringVar(&pluginID, "plugin-id", "", "the plugin ID of the plugin to be used")
 	networkElementCreateCmd.Flags().StringVarP(&address, "address", "a", "", "address of a gnmi target, e.g. 192.168.1.1:6030")
 	networkElementCreateCmd.Flags().StringVarP(&username, "username", "u", "", "username for a gnmi resource")
 	networkElementCreateCmd.Flags().StringVarP(&password, "password", "p", "", "password for a gnmi resource")
+	networkElementCreateCmd.Flags().BoolVarP(&tls, "tls", "t", false, "use flag to enable the controller to send requests to network elements using tls")
 }