fix(types): import request types from teeny-request (#682)

Author: callmehiphop

src/database.ts

@@ -27,7 +27,7 @@ import {promisify, promisifyAll} from '@google-cloud/promisify';
 import arrify = require('arrify');
 import * as extend from 'extend';
 import * as is from 'is';
-import * as r from 'request';
+import * as r from 'teeny-request';
 import * as streamEvents from 'stream-events';
 import * as through from 'through2';
 

src/session.ts

@@ -24,7 +24,7 @@ import {ServiceObject} from '@google-cloud/common-grpc';
 import {promisifyAll} from '@google-cloud/promisify';
 import * as extend from 'extend';
 import * as is from 'is';
-import * as r from 'request';
+import * as r from 'teeny-request';
 import {
   Snapshot,
   Transaction,