message: test: address a couple minor issues with system tests
diff: @@ -39,7 +39,7 @@ nock(HOST_ADDRESS)
  describe('Logging', () => {
  let PROJECT_ID: string;
  const TESTS_PREFIX = 'gcloud-logging-test';
  - const WRITE_CONSISTENCY_DELAY_MS = 10000;
  + const WRITE_CONSISTENCY_DELAY_MS = 15000;
  const bigQuery = new BigQuery();
  const pubsub = new PubSub();
  @@ -322,22 +322,25 @@ describe('Logging', () => {
  });
  describe('log-specific entries', () => {
  - const {log, logEntries} = getTestLog();
  + let logExpected, logEntriesExpected;
  before(done => {
  + const {log, logEntries} = getTestLog();
  + logExpected = log;
  + logEntriesExpected = logEntries;
  log.write(logEntries, options, done);
  });
  it('should list log entries', done => {
  - getEntriesFromLog(log, (err, entries) => {
  + getEntriesFromLog(logExpected, (err, entries) => {
  assert.ifError(err);
  - assert.strictEqual(entries.length, logEntries.length);
  + assert.strictEqual(entries.length, logEntriesExpected.length);
  done();
  });
  });
  it('should list log entries as a stream', done => {
  - const logstream = log
  + const logstream = logExpected
  .getEntriesStream({
  autoPaginate: false,
  pageSize: 1,
  @@ -357,7 +360,7 @@ describe('Logging', () => {
  it('should write a single entry to a log as a Promise', async () => {
  const {log, logEntries} = getTestLog();
  - log.write(logEntries[1], options);
  + await log.write(logEntries[1], options);
  });
  it('should write multiple entries to a log', done => {
  