Disable inline upload on isolate server..
Disable inline upload on isolate server..

urlfetch fails really too often, this will greatly reduce the load.

Also explicitly ignore TransientError.

R=vadimsh@chromium.org
BUG=chromium:341734

Review URL: https://codereview.appspot.com/61930045

pombreda/swarming,pombreda/swarming,luci/luci-py,madecoste/swarming,pombreda/swarming,madecoste/swarming,luci/luci-py,luci/luci-py,pombreda/swarming,madecoste/swarming,madecoste/swarming,luci/luci-py