Add RedisIntegration to Sentry trial

This should expose additional performance stats.

application.py

@@ -3,13 +3,14 @@ import os
 import sentry_sdk
 from flask import Flask
 from sentry_sdk.integrations.flask import FlaskIntegration
+from sentry_sdk.integrations.redis import RedisIntegration
 from sentry_sdk.integrations import logging
 
 from app import create_app
 
 sentry_sdk.init(
     dsn=os.environ['SENTRY_DSN'],
-    integrations=[FlaskIntegration()],
+    integrations=[FlaskIntegration(), RedisIntegration()],
     environment=os.environ['NOTIFY_ENVIRONMENT'],
     attach_stacktrace=True,
     traces_sample_rate=0.00005  # avoid exceeding rate limits in Production