Flaky tests in CircleCI

[indradhanush]

In one instance, the test failed by timing out for one of the statements to return. Rebuilding it fixed the problem.

This is the build in question: https://circleci.com/gh/kinvolk/habitat-service-broker/98

And the timed out statement from broker_tests.go:

	if err := wait.Poll(time.Second, time.Minute*1, func() (bool, error) {
		val, err = redisClient.Get(redisKey).Result()
		if err == nil {
			return true, nil
		}

		return false, nil
	}); err != nil {
		t.Fatal(err)
	}