Add LUCI configs for new chromeos-amd64-generic-rel-vm-tests bot.

TBR=jbudorick@chromium.org

Bug: 832374
Change-Id: I7500d930c5e8de66661e10867e35333d13d04355
Reviewed-on: https://chromium-review.googlesource.com/1011622
Commit-Queue: Ben Pastene <bpastene@chromium.org>
Reviewed-by: Ben Pastene <bpastene@chromium.org>
Cr-Commit-Position: refs/heads/master@{#550656}

infra/config/global/cr-buildbucket.cfg

@@ -504,6 +504,12 @@ buckets {
       mixins: "chromeos-ci"
     }
 
+    builders {
+      name: "chromeos-amd64-generic-rel-vm-tests"
+      mixins: "fyi-ci"
+      mixins: "linux"
+    }
+
     # Fuchsia bots.
     builders {
       name: "Fuchsia ARM64"

infra/config/global/luci-scheduler.cfg

@@ -70,6 +70,7 @@ trigger {
 
   # ChromeOS. Sorted alphabetically.
   triggers: "chromeos-amd64-generic-rel"
+  triggers: "chromeos-amd64-generic-rel-vm-tests"
 
   # Linux. Sorted alphabetically.
   triggers: "Cast Linux"
@@ -360,6 +361,16 @@ job {
   }
 }
 
+job {
+  id: "chromeos-amd64-generic-rel-vm-tests"
+  acl_sets: "default"
+  buildbucket: {
+    server: "cr-buildbucket.appspot.com"
+    bucket: "luci.chromium.ci"
+    builder: "chromeos-amd64-generic-rel-vm-tests"
+  }
+}
+
 ################################################################################
 # Linux Builders. Sorted alphabetically except builder-Testers must follow their
 # builder-Builders.