Add blurcircles to blacklist for macmini4.1

BUG=skia:5414
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2053373002

Review-Url: https://codereview.chromium.org/2053373002

tools/dm_flags.json

@@ -2044,7 +2044,11 @@
     "_", 
     "image", 
     "_", 
-    "abnormal.wbmp"
+    "abnormal.wbmp", 
+    "msaa16", 
+    "gm", 
+    "_", 
+    "blurcircles"
   ], 
   "Test-Mac-Clang-MacMini6.2-GPU-HD4000-x86_64-Debug-CommandBuffer": [
     "--config", 

tools/dm_flags.py

@@ -213,6 +213,7 @@ def get_args(bot):
   # Large image that overwhelms older Mac bots
   if 'MacMini4.1-GPU' in bot:
     blacklist.extend('_ image _ abnormal.wbmp'.split(' '))
+    blacklist.extend(['msaa16', 'gm', '_', 'blurcircles'])
 
   match = []
   if 'Valgrind' in bot: # skia:3021