Add canary roll CL link to canary task driver

https://screenshot.googleplex.com/yo6aL7mtsY3

Bug: skia:10477
Change-Id: I5b7cc1a5f72583b0e62e627b5258ec1436bf3a0c
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/303260
Commit-Queue: Ravi Mistry <rmistry@google.com>
Reviewed-by: Eric Boren <borenet@google.com>
3 files changed