lib/plugins/aws/deployList/index.js/AwsDeployList/getFunctions
class AwsDeployList:  getFunctions() {
    const funcs = this.serverless.service.getAllFunctionsNames();

    return BbPromise.map(funcs, (funcName) => {
      const params = {
        FunctionName: funcName,
      };

      return this.provider.request('Lambda',
        'getFunction',
        params);
    }).then((result) => _.map(result, (item) => item.Configuration));
  }