Add additional logging to swarm_get_results.py
Add additional logging to swarm_get_results.py

This is to help track down the missing shards and will be removed later.

TBR=maruel@chromium.org
BUG=

Review URL: https://chromiumcodereview.appspot.com/19531003

git-svn-id: d5a9b8648c52d490875de6588c8ee7ca688f9ed1@212101 0039d316-1c4b-4281-b951-d872f2087c98

luci/luci-py,luci/luci-py,luci/luci-py,luci/luci-py