infra: Split chromium.goma.fyi into 'prod' vs 'tot'

These categories are based on which version of the RBE backend the
builders use.

R=dpranke@chromium.org, hinoka@chromium.org, jbudorick@chromium.org

Bug: 947436
Change-Id: I95540e17b6ff72f58f38e1943aa4b7f14b6588eb
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1564286Reviewed-by: Dirk Pranke <dpranke@chromium.org>
Commit-Queue: Simon Que <sque@chromium.org>
Cr-Commit-Position: refs/heads/master@{#650518}

infra/config/luci-milo.cfg

@@ -2904,68 +2904,68 @@ consoles {
   include_experimental_builds: true
   builders {
     name: "buildbucket/luci.chromium.ci/Chromium Linux Goma RBE Prod"
-    category: "linux|rel"
+    category: "prod|linux|rel"
   }
   builders {
     name: "buildbucket/luci.chromium.ci/Chromium Linux Goma RBE Prod (clobber)"
-    category: "linux|rel"
+    category: "prod|linux|rel"
     short_name: "clb"
   }
   builders {
     name: "buildbucket/luci.chromium.ci/Chromium Linux Goma RBE Prod (dbg)"
-    category: "linux|dbg"
+    category: "prod|linux|dbg"
   }
   builders {
     name: "buildbucket/luci.chromium.ci/Chromium Linux Goma RBE Prod (dbg) (clobber)"
-    category: "linux|dbg"
+    category: "prod|linux|dbg"
     short_name: "clb"
   }
   builders {
     name: "buildbucket/luci.chromium.ci/Chromium Android ARM 32-bit Goma RBE Prod"
-    category: "android arm|rel"
+    category: "prod|android arm|rel"
   }
   builders {
     name: "buildbucket/luci.chromium.ci/Chromium Android ARM 32-bit Goma RBE Prod (clobber)"
-    category: "android arm|rel"
+    category: "prod|android arm|rel"
     short_name: "clb"
   }
   builders {
     name: "buildbucket/luci.chromium.ci/Chromium Android ARM 32-bit Goma RBE Prod (dbg)"
-    category: "android arm|dbg"
+    category: "prod|android arm|dbg"
   }
   builders {
     name: "buildbucket/luci.chromium.ci/Chromium Android ARM 32-bit Goma RBE Prod (dbg) (clobber)"
-    category: "android arm|dbg"
+    category: "prod|android arm|dbg"
     short_name: "clb"
   }
   builders {
     name: "buildbucket/luci.chromium.ci/Cast Linux (Goma RBE FYI)"
-    category: "chromium.linux|cast"
+    category: "tot|chromium.linux|cast"
     short_name: "vid"
   }
   builders {
     name: "buildbucket/luci.chromium.ci/fuchsia-fyi-arm64-rel (Goma RBE FYI)"
-    category: "chromium.linux|fuchsia|misc"
+    category: "tot|chromium.linux|fuchsia|misc"
     short_name: "a64"
   }
   builders {
     name: "buildbucket/luci.chromium.ci/fuchsia-fyi-x64-rel (Goma RBE FYI)"
-    category: "chromium.linux|fuchsia|misc"
+    category: "tot|chromium.linux|fuchsia|misc"
     short_name: "x64"
   }
   builders {
     name: "buildbucket/luci.chromium.ci/chromeos-amd64-generic-rel (Goma RBE FYI)"
-    category: "chromium.chromiumos|simple|release|x64"
+    category: "tot|chromium.chromiumos|simple|release|x64"
     short_name: "rel"
   }
   builders {
     name: "buildbucket/luci.chromium.ci/Linux ASan LSan Builder (Goma RBE FYI)"
-    category: "chromium.memory|linux|asan lsan"
+    category: "tot|chromium.memory|linux|asan lsan"
     short_name: "bld"
   }
   builders {
     name: "buildbucket/luci.chromium.ci/Linux MSan Builder (Goma RBE FYI)"
-    category: "chromium.memory|linux|msan"
+    category: "tot|chromium.memory|linux|msan"
     short_name: "bld"
   }
 }