[swarming] Enable web components task-list ui by default
[swarming] Enable web components task-list ui by default

Bug: 842181
Change-Id: Id7cfd7d34a06bed8380b8b7ab07ca47262ad74e2
Reviewed-on: https://chromium-review.googlesource.com/c/1454822
Reviewed-by: Marc-Antoine Ruel <d2bf0fc09b08f7b0888b3ddab32b3e89c7122c8b@chromium.org>
Commit-Queue: Marc-Antoine Ruel <d2bf0fc09b08f7b0888b3ddab32b3e89c7122c8b@chromium.org>
Auto-Submit: Kevin Lubick <7cdab2cfab351f23814786ba39716e90eed69047@chromium.org>

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