Upgrade NVIDIA driver on Ubuntu18 QuadroP400 bots.

Remove Test-Ubuntu18-Clang-Golo-GPU-QuadroP400-x86_64-(Debug|Release)
-All-DDL3_ASAN_Vulkan jobs because they fail with an unidentifiable
memory leak in the NVIDIA driver. These were replaced with Intel jobs
in https://skia-review.googlesource.com/c/skia/+/184071.

Bug: skia:8709
Change-Id: I0c849537e65402a472e674193b0652b80263289c
Reviewed-on: https://skia-review.googlesource.com/c/182262
Commit-Queue: Kevin Lubick <kjlubick@google.com>
Auto-Submit: Ben Wagner <benjaminwagner@google.com>
Reviewed-by: Kevin Lubick <kjlubick@google.com>
diff --git a/infra/bots/gen_tasks.go b/infra/bots/gen_tasks.go
index 0df2d16..4b5f297 100644
--- a/infra/bots/gen_tasks.go
+++ b/infra/bots/gen_tasks.go
@@ -591,8 +591,8 @@
 					glog.Fatalf("Entry %q not found in Ubuntu GPU mapping.", parts["cpu_or_gpu_value"])
 				}
 				if parts["os"] == "Ubuntu18" && parts["cpu_or_gpu_value"] == "QuadroP400" {
-					// Ubuntu18 has a slightly newer GPU driver.
-					gpu = "10de:1cb3-390.87"
+					// Ubuntu18 has a newer GPU driver.
+					gpu = "10de:1cb3-415.27"
 				}
 				d["gpu"] = gpu
 			} else if strings.Contains(parts["os"], "Mac") {