Import discovery instead of build for readability & fix comment
Import discovery instead of build for readability & fix comment

jonparrott/compute-appengine-timeout-python,jonparrott/compute-appengine-timeout-python,googlearchive/compute-appengine-timeout-python,mahmoud76/compute-appengine-timeout-python,mahmoud76/compute-appengine-timeout-python,googlearchive/compute-appengine-timeout-python