lncli: rename updatefees to updatechanpolicy

This commit renames the `lncli updatefees` command to
`lncli updatechanpolicy` and adds `time_lock_delta` as
one of the passed parameters.

cmd/lncli/main.go

@@ -193,7 +193,7 @@ func main() {
 		signMessageCommand,
 		verifyMessageCommand,
 		feeReportCommand,
-		updateFeesCommand,
+		updateChannelPolicyCommand,
 	}
 
 	if err := app.Run(os.Args); err != nil {