[LUCI] Add 'Headless Linux (dbg)' CI bot to buildbucket, scheduler and milo

Bug: 790367
Change-Id: I53baf6424746078bbc0ef23c23aa85e6026ebcc9
Reviewed-on: https://chromium-review.googlesource.com/1015226Reviewed-by: John Budorick <jbudorick@chromium.org>
Commit-Queue: Shenghua Zhang <shenghuazhang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#551543}

infra/config/global/cr-buildbucket.cfg

@@ -703,6 +703,12 @@ buckets {
       mixins: "linux-gpu-fyi-ci"
     }
 
+    builders {
+      name: "Headless Linux (dbg)"
+      mixins: "linux"
+      mixins: "fyi-ci"
+    }
+
     # Mac bots.
     builders {
       name: "mac-jumbo-rel"

infra/config/global/luci-milo.cfg

@@ -1705,6 +1705,17 @@ consoles: {
     category: "chromium.mac|ios-simulator"
     short_name: "ci"
   }
+
+  builders: {
+    name: "buildbot/chromium.fyi/Headless Linux (dbg)"
+    category: "chromium.fyi|linux|debug"
+    short_name: "bb"
+  }
+  builders: {
+    name: "buildbucket/luci.chromium.ci/Headless Linux (dbg)"
+    category: "chromium.fyi|linux|debug"
+    short_name: "ci"
+  }
 }
 
 # Everything below was generated from buildermap.json.
@@ -2528,6 +2539,7 @@ consoles: {
   }
   builders: {
     name: "buildbot/chromium.fyi/Headless Linux (dbg)"
+    name: "buildbucket/luci.chromium.ci/Headless Linux (dbg)"
     category: "linux"
   }
   builders: {

infra/config/global/luci-scheduler.cfg

@@ -88,6 +88,7 @@ trigger {
   triggers: "GPU FYI Linux dEQP Builder"
   triggers: "GPU FYI Linux Ozone Builder"
   triggers: "GPU Linux Builder"
+  triggers: "Headless Linux (dbg)"
   triggers: "linux-blink-heap-incremental-marking"
   triggers: "linux-blink-heap-verification"
   triggers: "Linux ASan LSan Builder"
@@ -609,6 +610,16 @@ job {
   }
 }
 
+job {
+  id: "Headless Linux (dbg)"
+  acl_sets: "default"
+  buildbucket: {
+    server: "cr-buildbucket.appspot.com"
+    bucket: "luci.chromium.ci"
+    builder: "Headless Linux (dbg)"
+  }
+}
+
 job {
   id: "linux-blink-heap-incremental-marking"
   acl_sets: "default"