rename getServices to getServiceIds

src/services.js

@@ -1,7 +1,7 @@
 'use strict';
 
 exports = module.exports = {
-    getServices,
+    getServiceIds,
     getService,
     getServiceConfig,
     configureService,
@@ -347,19 +347,19 @@ function containerStatus(containerName, tokenEnvName, callback) {
     });
 }
 
-function getServices(callback) {
+function getServiceIds(callback) {
     assert.strictEqual(typeof callback, 'function');
 
-    let services = Object.keys(SERVICES);
+    let serviceIds = Object.keys(SERVICES);
 
     appdb.getAll(function (error, apps) {
         if (error) return callback(error);
 
         for (let app of apps) {
-            if (app.manifest.addons && app.manifest.addons['redis']) services.push(`redis:${app.id}`);
+            if (app.manifest.addons && app.manifest.addons['redis']) serviceIds.push(`redis:${app.id}`);
         }
 
-        callback(null, services);
+        callback(null, serviceIds);
     });
 }