Certificate rotation enhancements (#570)

lemur/endpoints/service.py

@@ -10,12 +10,12 @@
 """
 from flask import current_app
 
-from lemur import database
-from lemur.extensions import metrics
-from lemur.endpoints.models import Endpoint, Policy, Cipher
-
 from sqlalchemy import func
 
+from lemur import database
+from lemur.endpoints.models import Endpoint, Policy, Cipher
+from lemur.extensions import metrics
+
 
 def get_all():
     """