feat: disable throttling for priveleged users

Introduces a setting PRIVELEGED_USER_IDS, such that any user
id in the list is exempt from throttling limits.

license_manager/apps/core/throttles.py

@@ -3,13 +3,28 @@
 so that we can throttle both bursty and sustained
 throughtput.
 """
-
+from django.conf import settings
 from rest_framework.throttling import UserRateThrottle
 
 
-class UserBurstRateThrottle(UserRateThrottle):
+class PrivelegedUserThrottle(UserRateThrottle):
+    """
+    Skips throttling is the requesting authenticated user
+    is in the list of priveleged user ids.
+    is staff or superuser.
+    """
+    def allow_request(self, request, view):
+        user = request.user
+
+        if user and user.is_authenticated and user.id in settings.PRIVELEGED_USER_IDS:
+            return True
+
+        return super().allow_request(request, view)
+
+
+class UserBurstRateThrottle(PrivelegedUserThrottle):
     scope = 'user_burst'
 
 
-class UserSustainedRateThrottle(UserRateThrottle):
+class UserSustainedRateThrottle(PrivelegedUserThrottle):
     scope = 'user_sustained'

license_manager/settings/base.py

@@ -163,6 +163,9 @@
     }
 }
 
+# Maintain a list of user ids to opt-out of API throttle limits
+PRIVELEGED_USER_IDS = []
+
 # Internationalization
 # https://docs.djangoproject.com/en/dev/topics/i18n/