storage: simplify unit tests
storage: simplify unit tests

since we control the "server" for these tests, there is no need
for a timeout.

Fixes #602

Change-Id: Ie98c310dba24c1b8cfeeafc2cf0f82114d2d7e61
Reviewed-on: https://code-review.googlesource.com/12190
Reviewed-by: Jonathan Amsterdam <e3d3698b2ccd5955e4adf250d0785062d0f9018b@google.com>

googleapis/google-cloud-go,googleapis/google-cloud-go,googleapis/google-cloud-go,googleapis/google-cloud-go