fix: fix system tests by choosing semver range for BigQuery (#297)

Author: JustinBeckwith

handwritten/logging/package.json

@@ -91,7 +91,7 @@
     "through2": "^2.0.3"
   },
   "devDependencies": {
-    "@google-cloud/bigquery": "*",
+    "@google-cloud/bigquery": "^2.0.1",
     "@google-cloud/nodejs-repo-tools": "^2.3.3",
     "@google-cloud/pubsub": "^0.20.1",
     "@google-cloud/storage": "^2.2.0",

handwritten/logging/system-test/logging.ts

@@ -15,8 +15,7 @@
  */
 
 import * as assert from 'assert';
-// tslint:disable-next-line variable-name
-const BigQuery = require('@google-cloud/bigquery');
+const {BigQuery} = require('@google-cloud/bigquery');
 import * as extend from 'extend';
 import * as is from 'is';
 import * as nock from 'nock';