added logging for C_you_later only to check problems

test/schedconf/dm_user_multi_behavior_C_you_later_only.json

 {
     "seed" : -3,
     "red_windows" :  [[200000, 300000]],
+    "log_user_stats" : true,
+    "log_folder" : "test-out/dm_user_multi_behavior_C_you_later_only-2machines",
     "users": [
         {
             "name": "user14",