gatekeeper: Ignore new chromium.perf bots

scripts/slave/gatekeeper.json

 {
   "comment": ["This is a configuration file for gatekeeper_ng.py",
               "Look at that for documentation on this file's format."],
 
   "masters": {
     "https://build.chromium.org/p/chromium": [
       {
         "categories": [
           "chromium_tree_closer"
         ],
@@ skipping 451 matching lines @@
     "https://build.chromium.org/p/chromium.perf": [
       {
         "forgive_all": "true",
 
         "subject_template": "%(project_name)s %(builder_name)s %(result)s",
 
         "categories": [
           "chromium_perf_steps"
         ],
 
+        "excluded_builders" : [
+            "Android Galaxy S5 Perf (1)",
+            "Android Galaxy S5 Perf (2)",
+            "Android Galaxy S5 Perf (3)",
+            "Mac Pro 10.11 Perf",
+            "Mac Air 10.11 Perf"
+        ],
+
         "builders": {
           "*": {}
         }
       }
     ],
     "https://build.chromium.org/p/chromium.tools.build": [
       {
         "builders": {
           "cipd-test-end-to-end_mac": {
             "closing_optional": [
@@ skipping 539 matching lines @@
         "cleanup_temp",
         "taskkill"
       ],
       "closing_optional": [
         "compile",
         "gn"
       ]
     }
   }
 }