Chore: adding Datadog monitoring middleware (#548)

* chore: adding datadog monitoring middleware

* style: fix comment

enterprise_access/settings/base.py

@@ -83,6 +83,7 @@ def root(*path_fragments):
     'log_request_id.middleware.RequestIDMiddleware',
     # Resets RequestCache utility for added safety.
     'edx_django_utils.cache.middleware.RequestCacheMiddleware',
+    'edx_django_utils.monitoring.DeploymentMonitoringMiddleware',
     # Enables monitoring utility for writing custom metrics.
     'edx_django_utils.monitoring.middleware.MonitoringCustomMetricsMiddleware',
     'corsheaders.middleware.CorsMiddleware',
@@ -100,7 +101,7 @@ def root(*path_fragments):
     # Enables force_django_cache_miss functionality for TieredCache.
     'edx_django_utils.cache.middleware.TieredCacheMiddleware',
     # Outputs monitoring metrics for a request.
-    'edx_rest_framework_extensions.middleware.RequestMetricsMiddleware',
+    'edx_rest_framework_extensions.middleware.RequestCustomAttributesMiddleware',
     # Ensures proper DRF permissions in support of JWTs
     'edx_rest_framework_extensions.auth.jwt.middleware.EnsureJWTAuthSettingsMiddleware',
     # Track who made each change to a model using HistoryRequestMiddleware