feat: dump plugin info when it implicit enable by dependents plugin (#248)

Author: atian25

lib/loader/mixin/plugin.js

@@ -311,9 +311,15 @@ module.exports = {
       if (!allPlugins[name].enable) {
         implicitEnabledPlugins.push(name);
         allPlugins[name].enable = true;
+        allPlugins[name].implicitEnable = true;
       }
     });
 
+    for (const [ name, dependents ] of Object.entries(requireMap)) {
+      // note:`dependents` will not includes `optionalDependencies`
+      allPlugins[name].dependents = dependents;
+    }
+
     // Following plugins will be enabled implicitly.
     //   - configclient required by [hsfclient]
     //   - eagleeye required by [hsfclient]

test/loader/mixin/load_plugin.test.js

@@ -641,6 +641,10 @@ describe('test/load_plugin.test.js', function() {
       'tracelog',
       'gateway',
     ]);
+
+    assert(loader.allPlugins.zoneclient.enable === true);
+    assert(loader.allPlugins.zoneclient.implicitEnable === true);
+    assert.deepEqual(loader.allPlugins.zoneclient.dependents, [ 'ldc' ]);
   });
 
   it('should load plugin from scope', () => {