Switch luci-py CQ to Gerrit
Switch luci-py CQ to Gerrit

Bug: 726507
Change-Id: I93f164730d64f636221445f4f4b9b15ccd236f74
Reviewed-on: https://chromium-review.googlesource.com/607174
Reviewed-by: Daniel Jacques <8400006a9338a0893dca0101ad49838955bd6b2c@chromium.org>

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