multi: pass new Node option file to wallet plugin

`file` is similar to `config`, but it propogates to the wallet plugin
and loads the wallet config file only if set to true.

This is useful to disable config files for both node and wallet when
running a full node, for example in a test environment.

bin/node

@@ -22,7 +22,7 @@ if (process.argv.indexOf('--version') !== -1
 const FullNode = require('../lib/node/fullnode');
 
 const node = new FullNode({
-  config: true,
+  file: true,
   argv: true,
   env: true,
   logFile: true,

bin/wallet

@@ -22,7 +22,7 @@ if (process.argv.indexOf('--version') !== -1
 const Node = require('../lib/wallet/node');
 
 const node = new Node({
-  config: true,
+  file: true,
   argv: true,
   env: true,
   logFile: true,

lib/node/node.js

@@ -43,7 +43,7 @@ class Node extends EventEmitter {
     this.config.inject(options);
     this.config.load(options);
 
-    if (options.config)
+    if (options.file || options.config)
       this.config.open(config);
 
     this.network = Network.get(this.config.getSuffix());

lib/wallet/plugin.js

@@ -34,7 +34,9 @@ class Plugin extends EventEmitter {
     super();
 
     this.config = node.config.filter('wallet');
-    this.config.open('wallet.conf');
+
+    if (node.config.options.file)
+      this.config.open('wallet.conf');
 
     this.network = node.network;
     this.logger = node.logger;