[skqp/dev] Update driver on Ubuntu18 Quadro bots

Also remove "rack" dimension. The os dimension now aligns with the rack
dimension, so we don't need to worry about it.

Cherry-picked from https://skia-review.googlesource.com/c/skia/+/215087

Bug: chromium:919950
Change-Id: I8c07645cd6d662bb93475a280df4f86217cc942a
Commit-Queue: Ben Wagner aka dogben <benjaminwagner@google.com>
Reviewed-by: Eric Boren <borenet@google.com>
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/224538
Commit-Queue: Eric Boren <borenet@google.com>
Auto-Submit: Ben Wagner aka dogben <benjaminwagner@google.com>
2 files changed