fix settings test

services/filestore/test/unit/coffee/SettingsTests.coffee

@@ -4,19 +4,16 @@ chai = require('chai')
 should = chai.should()
 expect = chai.expect
 modulePath = "../../../app/js/BucketController.js"
-SandboxedModule = require('sandboxed-module')
 
 describe "Settings", ->
 	describe "s3", ->
 		it "should use JSONified env var if present", (done)->
 			s3_settings =
-				key: 'default_key'
-				secret: 'default_secret'
 				bucket1:
 					auth_key: 'bucket1_key'
 					auth_secret: 'bucket1_secret'
-			process.env['S3_CREDENTIALS'] = JSON.stringify s3_settings
+			process.env['S3_BUCKET_CREDENTIALS'] = JSON.stringify s3_settings
 
-			settings =require('settings-sharelatex')
-			expect(settings.filestore.s3).to.deep.equal s3_settings
+			settings = require("settings-sharelatex")
+			expect(settings.filestore.s3BucketCreds).to.deep.equal s3_settings
 			done()