Silence global-require rule in ospec, add ecma 2017 parser to eslintrc for async/await in test-ospec

.eslintrc.js

@@ -5,6 +5,9 @@ module.exports = {
         "es6": true,
         "node": true
 	},
+	"parserOptions": {
+		"ecmaVersion": 2017,
+	},
     "extends": "eslint:recommended",
     "rules": {
         "accessor-pairs": "error",

ospec/ospec.js

@@ -1,4 +1,4 @@
-/* eslint-disable no-bitwise, no-process-exit */
+/* eslint-disable global-require, no-bitwise, no-process-exit */
 "use strict"
 
 module.exports = new function init(name) {