Change the health check to ping the db and the redis build logs.

data/buildlogs.py

@@ -73,6 +73,13 @@ class RedisBuildLogs(object):
 
     return json.loads(fetched) if fetched else None
 
+  def check_health(self):
+    try:
+      return self._redis.ping() == True
+    except redis.ConnectionError:
+      return False
+
+
 class BuildLogs(object):
   def __init__(self, app=None):
     self.app = app