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

data/model/legacy.py

@@ -1647,3 +1647,11 @@ def delete_user(user):
   user.delete_instance(recursive=True, delete_nullable=True)
 
   # TODO: also delete any repository data associated
+
+def check_health():
+  # We will connect to the db, check that it contains some log entry kinds
+  try:
+    found_count = LogEntryKind.select().count()
+    return found_count > 0
+  except:
+    return False