Implemented SwarmingTelemetryGPUTest
Implemented SwarmingTelemetryGPUTest

Example execution of a telemetry test on swarming: https://chromium-swarm.appspot.com/user/task/149c35e28264b00. Although it failed (no permission to access relevant GS bucket), the main purpose of this test was to verify that tests are at correctly triggered. Similar test for GTest: https://chromium-swarm.appspot.com/user/task/149c3554f507800. Here it failed because results were different (probably due to a different GPU than used to generate golden images).

BUG=426897
R=phajdan.jr@chromium.org,kbr@chromium.org

Review URL: https://codereview.chromium.org/732953002

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@293003 0039d316-1c4b-4281-b951-d872f2087c98

shishkander/recipes-py,shishkander/recipes-py,luci/recipes-py,luci/recipes-py