Set Traceback checkbox to default True

Fix django warnings

PRODX-37496


Change-Id: I0fe744d52444934395700673e5ea85f3f7660b29
diff --git a/testrail_bot/control/models.py b/testrail_bot/control/models.py
index 6a2ec82..a68d088 100644
--- a/testrail_bot/control/models.py
+++ b/testrail_bot/control/models.py
@@ -2,6 +2,7 @@
 
 from django.core.files.storage import FileSystemStorage
 from django.db import models
+from django.utils.timezone import now
 
 
 class IntegerListField(models.Field):
@@ -42,10 +43,9 @@
     filter_func = models.TextField(null=True, blank=True)
     ip_filter = models.BooleanField(default=True)
     uuid_filter = models.BooleanField(default=True)
-    filter_last_traceback = models.BooleanField(default=False)
-    created_before = models.DateField(default=datetime.date.today())
-    created_after = models.DateField(default=datetime.date.today() +
-                                             datetime.timedelta(days=-3*30))
+    filter_last_traceback = models.BooleanField(default=True)
+    created_before = models.DateField(default=now)
+    created_after = models.DateField(default=now)
 
     @property
     def text_filters(self):