feat: add nodejs8 runtime\n\nBREAKING CHANGE: default to nodejs8, overwrite with "runtime: nodejs6" in serverless.yml

Author: PatrickHeneise

shared/utils.js

@@ -9,6 +9,8 @@ module.exports = {
       || 'dev';
     this.options.region = _.get(this, 'options.region')
       || 'us-central1';
+    this.options.runtime = _.get(this, 'options.runtime')
+      || 'nodejs8';
 
     return BbPromise.resolve();
   },

shared/utils.test.js

@@ -20,15 +20,18 @@ describe('Utils', () => {
       .setDefaults().then(() => {
         expect(googleCommand.options.stage).toEqual('dev');
         expect(googleCommand.options.region).toEqual('us-central1');
+        expect(googleCommand.options.runtime).toEqual('nodejs8');
       }));
 
     it('should set the options when they are provided', () => {
       googleCommand.options.stage = 'my-stage';
       googleCommand.options.region = 'my-region';
+      googleCommand.options.runtime = 'nodejs6';
 
       return googleCommand.setDefaults().then(() => {
         expect(googleCommand.options.stage).toEqual('my-stage');
         expect(googleCommand.options.region).toEqual('my-region');
+        expect(googleCommand.options.runtime).toEqual('nodejs6');
       });
     });
   });